12538942 has 32 divisors (see below), whose sum is σ = 21417984. Its totient is φ = 5464800.

The previous prime is 12538931. The next prime is 12538949. The reversal of 12538942 is 24983521.

It is a junction number, because it is equal to n+sod(n) for n = 12538898 and 12538907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12538949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37717 + ... + 38047.

It is an arithmetic number, because the mean of its divisors is an integer number (669312).

Almost surely, 2^12538942 is an apocalyptic number.

12538942 is a deficient number, since it is larger than the sum of its proper divisors (8879042).

12538942 is a wasteful number, since it uses less digits than its factorization.

12538942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424.

The product of its digits is 17280, while the sum is 34.

The square root of 12538942 is about 3541.0368538043. The cubic root of 12538942 is about 232.3201955116.

The spelling of 12538942 in words is "twelve million, five hundred thirty-eight thousand, nine hundred forty-two".