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4202120231 = 171226920147
BaseRepresentation
bin1111101001110111…
…0100010000100111
3101211212000211021122
43322131310100213
532101220321411
61532550004155
7206063301251
oct37235642047
911755024248
104202120231
111866a95141
1299334665b
1351c76ba9a
142bc128cd1
15198d9c9db
hexfa774427

4202120231 has 8 divisors (see below), whose sum is σ = 4449887280. Its totient is φ = 3954418048.

The previous prime is 4202120207. The next prime is 4202120233. The reversal of 4202120231 is 1320212024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4202120231 - 226 = 4135011367 is a prime.

It is a super-2 number, since 2×42021202312 = 35315628871558986722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4202120233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198500 + ... + 218646.

It is an arithmetic number, because the mean of its divisors is an integer number (556235910).

Almost surely, 24202120231 is an apocalyptic number.

4202120231 is a deficient number, since it is larger than the sum of its proper divisors (247767049).

4202120231 is a wasteful number, since it uses less digits than its factorization.

4202120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32433.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4202120231 is about 64823.7628574584. The cubic root of 4202120231 is about 1613.7000957039.

Adding to 4202120231 its reverse (1320212024), we get a palindrome (5522332255).

It can be divided in two parts, 420212023 and 1, that added together give a palindrome (420212024).

The spelling of 4202120231 in words is "four billion, two hundred two million, one hundred twenty thousand, two hundred thirty-one".

Divisors: 1 17 12269 20147 208573 342499 247183543 4202120231