15121042 has 4 divisors (see below), whose sum is σ = 22681566. Its totient is φ = 7560520.

The previous prime is 15121033. The next prime is 15121061. The reversal of 15121042 is 24012151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24012151 = 457 ⋅52543.

It can be written as a sum of positive squares in only one way, i.e., 14220441 + 900601 = 3771^2 + 949^2 .

It is a super-2 number, since 2×15121042² = 457291822331528, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3780259 + ... + 3780262.

Almost surely, 2^15121042 is an apocalyptic number.

15121042 is a deficient number, since it is larger than the sum of its proper divisors (7560524).

15121042 is an equidigital number, since it uses as much as digits as its factorization.

15121042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560523.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 15121042 is about 3888.5784034786. The cubic root of 15121042 is about 247.2827982539.

Adding to 15121042 its reverse (24012151), we get a palindrome (39133193).

The spelling of 15121042 in words is "fifteen million, one hundred twenty-one thousand, forty-two".