15420113 has 4 divisors (see below), whose sum is σ = 15917568. Its totient is φ = 14922660.

The previous prime is 15420107. The next prime is 15420131. The reversal of 15420113 is 31102451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31102451 = 911 ⋅34141.

It is a cyclic number.

It is not a de Polignac number, because 15420113 - 2⁶ = 15420049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15420091 and 15420100.

It is not an unprimeable number, because it can be changed into a prime (15420103) 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, 248681 + ... + 248742.

It is an arithmetic number, because the mean of its divisors is an integer number (3979392).

Almost surely, 2^15420113 is an apocalyptic number.

It is an amenable number.

15420113 is a deficient number, since it is larger than the sum of its proper divisors (497455).

15420113 is an equidigital number, since it uses as much as digits as its factorization.

15420113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497454.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 15420113 is about 3926.8451713812. The cubic root of 15420113 is about 248.9024579907.

Adding to 15420113 its reverse (31102451), we get a palindrome (46522564).

The spelling of 15420113 in words is "fifteen million, four hundred twenty thousand, one hundred thirteen".