15380121 has 16 divisors (see below), whose sum is σ = 22464000. Its totient is φ = 9316608.

The previous prime is 15380119. The next prime is 15380137. The reversal of 15380121 is 12108351.

It is not a de Polignac number, because 15380121 - 2¹ = 15380119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15380161) 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, 3721 + ... + 6678.

It is an arithmetic number, because the mean of its divisors is an integer number (1404000).

Almost surely, 2^15380121 is an apocalyptic number.

It is an amenable number.

15380121 is a deficient number, since it is larger than the sum of its proper divisors (7083879).

15380121 is a wasteful number, since it uses less digits than its factorization.

15380121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10448.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 15380121 is about 3921.7497370434. The cubic root of 15380121 is about 248.6870958674.

Adding to 15380121 its reverse (12108351), we get a palindrome (27488472).

The spelling of 15380121 in words is "fifteen million, three hundred eighty thousand, one hundred twenty-one".