42156012566 has 8 divisors (see below), whose sum is σ = 63235464600. Its totient is φ = 21077524368.

The previous prime is 42156012559. The next prime is 42156012601. The reversal of 42156012566 is 66521065124.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119336 + ... + 313931.

It is an arithmetic number, because the mean of its divisors is an integer number (7904433075).

Almost surely, 2^42156012566 is an apocalyptic number.

42156012566 is a deficient number, since it is larger than the sum of its proper divisors (21079452034).

42156012566 is a wasteful number, since it uses less digits than its factorization.

42156012566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481918.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 42156012566 in words is "forty-two billion, one hundred fifty-six million, twelve thousand, five hundred sixty-six".