42257629393 has 8 divisors (see below), whose sum is σ = 48295735488. Its totient is φ = 36219848784.

The previous prime is 42257629387. The next prime is 42257629417. The reversal of 42257629393 is 39392675224.

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

It is not a de Polignac number, because 42257629393 - 2²⁹ = 41720758481 is a prime.

It is a super-2 number, since 2×42257629393² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42257629393.

It is not an unprimeable number, because it can be changed into a prime (42257629303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347655 + ... + 453187.

It is an arithmetic number, because the mean of its divisors is an integer number (6036966936).

Almost surely, 2^42257629393 is an apocalyptic number.

It is an amenable number.

42257629393 is a deficient number, since it is larger than the sum of its proper divisors (6038106095).

42257629393 is a wasteful number, since it uses less digits than its factorization.

42257629393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162743.

The product of its digits is 4898880, while the sum is 52.

The spelling of 42257629393 in words is "forty-two billion, two hundred fifty-seven million, six hundred twenty-nine thousand, three hundred ninety-three".