42115623 has 24 divisors (see below), whose sum is σ = 62161008. Its totient is φ = 25344000.

The previous prime is 42115607. The next prime is 42115637. The reversal of 42115623 is 32651124.

It is not a de Polignac number, because 42115623 - 2⁴ = 42115607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42115593 and 42115602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42115643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65383 + ... + 66023.

It is an arithmetic number, because the mean of its divisors is an integer number (2590042).

Almost surely, 2^42115623 is an apocalyptic number.

42115623 is a deficient number, since it is larger than the sum of its proper divisors (20045385).

42115623 is a wasteful number, since it uses less digits than its factorization.

42115623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 836 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 42115623 is about 6489.6550755799. The cubic root of 42115623 is about 347.9213473325.

Adding to 42115623 its reverse (32651124), we get a palindrome (74766747).

The spelling of 42115623 in words is "forty-two million, one hundred fifteen thousand, six hundred twenty-three".