23415642 has 20 divisors (see below), whose sum is σ = 52468746. Its totient is φ = 7805160.

The previous prime is 23415631. The next prime is 23415649. The reversal of 23415642 is 24651432.

23415642 is a `hidden beast` number, since 2 + 3 + 4 + 15 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13549761 + 9865881 = 3681^2 + 3141^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23415649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 72109 + ... + 72432.

Almost surely, 2^23415642 is an apocalyptic number.

23415642 is an abundant number, since it is smaller than the sum of its proper divisors (29053104).

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

23415642 is a wasteful number, since it uses less digits than its factorization.

23415642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144555 (or 144546 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 23415642 is about 4838.9711716438. The cubic root of 23415642 is about 286.0895688294.

It can be divided in two parts, 234 and 15642, that added together give a square (15876 = 126²).

The spelling of 23415642 in words is "twenty-three million, four hundred fifteen thousand, six hundred forty-two".