420157537 has 16 divisors (see below), whose sum is σ = 448479360. Its totient is φ = 392781312.

The previous prime is 420157523. The next prime is 420157547. The reversal of 420157537 is 735751024.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420157537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420157547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184039 + ... + 186307.

It is an arithmetic number, because the mean of its divisors is an integer number (28029960).

Almost surely, 2^420157537 is an apocalyptic number.

It is an amenable number.

420157537 is a deficient number, since it is larger than the sum of its proper divisors (28321823).

420157537 is a wasteful number, since it uses less digits than its factorization.

420157537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 420157537 is about 20497.7446808179. The cubic root of 420157537 is about 748.9808599134.

The spelling of 420157537 in words is "four hundred twenty million, one hundred fifty-seven thousand, five hundred thirty-seven".