15642113 has 2 divisors, whose sum is σ = 15642114. Its totient is φ = 15642112.

The previous prime is 15642089. The next prime is 15642119. The reversal of 15642113 is 31124651.

15642113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15547249 + 94864 = 3943^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 15642113 - 2¹⁶ = 15576577 is a prime.

It is not a weakly prime, because it can be changed into another prime (15642119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7821056 + 7821057.

It is an arithmetic number, because the mean of its divisors is an integer number (7821057).

Almost surely, 2^15642113 is an apocalyptic number.

It is an amenable number.

15642113 is a deficient number, since it is larger than the sum of its proper divisors (1).

15642113 is an equidigital number, since it uses as much as digits as its factorization.

15642113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 15642113 is about 3955.0111251424. The cubic root of 15642113 is about 250.0912360332.

Adding to 15642113 its reverse (31124651), we get a palindrome (46766764).

The spelling of 15642113 in words is "fifteen million, six hundred forty-two thousand, one hundred thirteen".