42538623 has 8 divisors (see below), whose sum is σ = 56921136. Its totient is φ = 28257600.

The previous prime is 42538597. The next prime is 42538627. The reversal of 42538623 is 32683524.

It is a happy number.

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

It is not a de Polignac number, because 42538623 - 2¹³ = 42530431 is a prime.

It is a super-2 number, since 2×42538623² = 3619068893472258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42538627) 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, 24388 + ... + 26073.

It is an arithmetic number, because the mean of its divisors is an integer number (7115142).

Almost surely, 2^42538623 is an apocalyptic number.

42538623 is a deficient number, since it is larger than the sum of its proper divisors (14382513).

42538623 is a wasteful number, since it uses less digits than its factorization.

42538623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50745.

The product of its digits is 34560, while the sum is 33.

The square root of 42538623 is about 6522.1639813792. The cubic root of 42538623 is about 349.0822842465.

The spelling of 42538623 in words is "forty-two million, five hundred thirty-eight thousand, six hundred twenty-three".