15021942 has 48 divisors (see below), whose sum is σ = 33655440. Its totient is φ = 4443264.

The previous prime is 15021899. The next prime is 15021961. The reversal of 15021942 is 24912051.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65484 + ... + 65712.

It is an arithmetic number, because the mean of its divisors is an integer number (701155).

Almost surely, 2^15021942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15021942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16827720).

15021942 is an abundant number, since it is smaller than the sum of its proper divisors (18633498).

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

15021942 is a wasteful number, since it uses less digits than its factorization.

15021942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 15021942 is about 3875.8150110654. The cubic root of 15021942 is about 246.7414013463.

Adding to 15021942 its reverse (24912051), we get a palindrome (39933993).

The spelling of 15021942 in words is "fifteen million, twenty-one thousand, nine hundred forty-two".