42517903438 has 8 divisors (see below), whose sum is σ = 63798045480. Its totient is φ = 21251888280.

The previous prime is 42517903433. The next prime is 42517903453. The reversal of 42517903438 is 83430971524.

42517903438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×42517903438² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42517903433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3524193 + ... + 3536236.

It is an arithmetic number, because the mean of its divisors is an integer number (7974755685).

Almost surely, 2^42517903438 is an apocalyptic number.

42517903438 is a deficient number, since it is larger than the sum of its proper divisors (21280142042).

42517903438 is a wasteful number, since it uses less digits than its factorization.

42517903438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7063442.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 42517903438 in words is "forty-two billion, five hundred seventeen million, nine hundred three thousand, four hundred thirty-eight".