42859623 has 8 divisors (see below), whose sum is σ = 57835008. Its totient is φ = 28228664.

The previous prime is 42859613. The next prime is 42859627. The reversal of 42859623 is 32695824.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42859623 - 2⁵ = 42859591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42859627) 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, 85815 + ... + 86312.

It is an arithmetic number, because the mean of its divisors is an integer number (7229376).

Almost surely, 2^42859623 is an apocalyptic number.

42859623 is a deficient number, since it is larger than the sum of its proper divisors (14975385).

42859623 is a wasteful number, since it uses less digits than its factorization.

42859623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172213.

The product of its digits is 103680, while the sum is 39.

The square root of 42859623 is about 6546.7261283790. The cubic root of 42859623 is about 349.9581528199.

The spelling of 42859623 in words is "forty-two million, eight hundred fifty-nine thousand, six hundred twenty-three".