42565674121620 has 384 divisors, whose sum is σ = 137570279938560. Its totient is φ = 9745876869120.

The previous prime is 42565674121571. The next prime is 42565674121643. The reversal of 42565674121620 is 2612147656524.

It is a super-2 number, since 2×42565674121620² (a number of 28 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 127 ways as a sum of consecutive naturals, for example, 503496874 + ... + 503581406.

It is an arithmetic number, because the mean of its divisors is an integer number (358255937340).

Almost surely, 2^{42565674121620} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42565674121620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68785139969280).

42565674121620 is an abundant number, since it is smaller than the sum of its proper divisors (95004605816940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42565674121620 is a wasteful number, since it uses less digits than its factorization.

42565674121620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85195 (or 85193 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 42565674121620 in words is "forty-two trillion, five hundred sixty-five billion, six hundred seventy-four million, one hundred twenty-one thousand, six hundred twenty".