23700042 has 12 divisors (see below), whose sum is σ = 51350130. Its totient is φ = 7900008.

The previous prime is 23700031. The next prime is 23700059. The reversal of 23700042 is 24000732.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22553001 + 1147041 = 4749^2 + 1071^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1316669 = 23700042 / (2 + 3 + 7 + 0 + 0 + 0 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 23699988 and 23700024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 658317 + ... + 658352.

Almost surely, 2^23700042 is an apocalyptic number.

23700042 is an abundant number, since it is smaller than the sum of its proper divisors (27650088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23700042 is a wasteful number, since it uses less digits than its factorization.

23700042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316677 (or 1316674 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 23700042 is about 4868.2688915055. The cubic root of 23700042 is about 287.2431662189.

Adding to 23700042 its reverse (24000732), we get a palindrome (47700774).

The spelling of 23700042 in words is "twenty-three million, seven hundred thousand, forty-two".