42520354646 has 32 divisors (see below), whose sum is σ = 79554776832. Its totient is φ = 16558832160.

The previous prime is 42520354637. The next prime is 42520354663. The reversal of 42520354646 is 64645302524.

It is a super-2 number, since 2×42520354646² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282785 + ... + 406211.

It is an arithmetic number, because the mean of its divisors is an integer number (2486086776).

Almost surely, 2^42520354646 is an apocalyptic number.

42520354646 is a deficient number, since it is larger than the sum of its proper divisors (37034422186).

42520354646 is a wasteful number, since it uses less digits than its factorization.

42520354646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125684.

The product of its (nonzero) digits is 691200, while the sum is 41.

The spelling of 42520354646 in words is "forty-two billion, five hundred twenty million, three hundred fifty-four thousand, six hundred forty-six".