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420252061 = 13125112781
BaseRepresentation
bin11001000011001…
…000100110011101
31002021210000110011
4121003020212131
51330041031221
6105411243221
713262040445
oct3103104635
91067700404
10420252061
111a6248659
12b88a9511
13690b2678
143db57125
1526d641e1
hex190c899d

420252061 has 8 divisors (see below), whose sum is σ = 425180448. Its totient is φ = 415350000.

The previous prime is 420252059. The next prime is 420252071. The reversal of 420252061 is 160252024.

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 420252061 - 21 = 420252059 is a prime.

It is a super-2 number, since 2×4202520612 = 353223589549495442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420252071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26491 + ... + 39271.

It is an arithmetic number, because the mean of its divisors is an integer number (53147556).

Almost surely, 2420252061 is an apocalyptic number.

It is an amenable number.

420252061 is a deficient number, since it is larger than the sum of its proper divisors (4928387).

420252061 is a wasteful number, since it uses less digits than its factorization.

420252061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13163.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 420252061 is about 20500.0502682311. The cubic root of 420252061 is about 749.0370224652.

The spelling of 420252061 in words is "four hundred twenty million, two hundred fifty-two thousand, sixty-one".

Divisors: 1 131 251 12781 32881 1674311 3208031 420252061