15421124 has 12 divisors (see below), whose sum is σ = 27029184. Its totient is φ = 7698504.

The previous prime is 15421121. The next prime is 15421139. The reversal of 15421124 is 42112451.

It is a happy number.

It is a super-2 number, since 2×15421124² = 475622130846752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15421096 and 15421105.

It is not an unprimeable number, because it can be changed into a prime (15421121) 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 3 ways as a sum of consecutive naturals, for example, 257 + ... + 5559.

It is an arithmetic number, because the mean of its divisors is an integer number (2252432).

Almost surely, 2^15421124 is an apocalyptic number.

It is an amenable number.

15421124 is a deficient number, since it is larger than the sum of its proper divisors (11608060).

15421124 is a wasteful number, since it uses less digits than its factorization.

15421124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6034 (or 6032 counting only the distinct ones).

The product of its digits is 320, while the sum is 20.

The square root of 15421124 is about 3926.9738985636. The cubic root of 15421124 is about 248.9078975290.

Adding to 15421124 its reverse (42112451), we get a palindrome (57533575).

The spelling of 15421124 in words is "fifteen million, four hundred twenty-one thousand, one hundred twenty-four".