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442143051 = 3721054431
BaseRepresentation
bin11010010110101…
…001000101001011
31010210222012020120
4122112221011023
51401142034201
6111512354323
713646103540
oct3226510513
91123865216
10442143051
1120763a689
121040a59a3
13707a870c
1442a14bc7
1528c3a536
hex1a5a914b

442143051 has 8 divisors (see below), whose sum is σ = 673741824. Its totient is φ = 252653160.

The previous prime is 442143017. The next prime is 442143061. The reversal of 442143051 is 150341244.

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

It is not a de Polignac number, because 442143051 - 213 = 442134859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442143061) 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, 10527195 + ... + 10527236.

It is an arithmetic number, because the mean of its divisors is an integer number (84217728).

Almost surely, 2442143051 is an apocalyptic number.

442143051 is a deficient number, since it is larger than the sum of its proper divisors (231598773).

442143051 is a wasteful number, since it uses less digits than its factorization.

442143051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21054441.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 442143051 is about 21027.1978874980. The cubic root of 442143051 is about 761.8233292997.

Adding to 442143051 its reverse (150341244), we get a palindrome (592484295).

The spelling of 442143051 in words is "four hundred forty-two million, one hundred forty-three thousand, fifty-one".

Divisors: 1 3 7 21 21054431 63163293 147381017 442143051