15138942 has 96 divisors (see below), whose sum is σ = 40334112. Its totient is φ = 3741696.

The previous prime is 15138941. The next prime is 15138971. The reversal of 15138942 is 24983151.

15138942 is nontrivially palindromic in base 16.

15138942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15138941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64858 + ... + 65090.

It is an arithmetic number, because the mean of its divisors is an integer number (420147).

Almost surely, 2^15138942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15138942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20167056).

15138942 is an abundant number, since it is smaller than the sum of its proper divisors (25195170).

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

15138942 is a wasteful number, since it uses less digits than its factorization.

15138942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 275 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 15138942 is about 3890.8793350604. The cubic root of 15138942 is about 247.3803359902.

It can be divided in two parts, 151 and 38942, that added together give a palindrome (39093).

The spelling of 15138942 in words is "fifteen million, one hundred thirty-eight thousand, nine hundred forty-two".