42513113 has 2 divisors, whose sum is σ = 42513114. Its totient is φ = 42513112.

The previous prime is 42513103. The next prime is 42513143. The reversal of 42513113 is 31131524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26296384 + 16216729 = 5128^2 + 4027^2 .

It is a cyclic number.

It is not a de Polignac number, because 42513113 - 2¹⁰ = 42512089 is a prime.

It is not a weakly prime, because it can be changed into another prime (42513103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256556 + 21256557.

It is an arithmetic number, because the mean of its divisors is an integer number (21256557).

Almost surely, 2^42513113 is an apocalyptic number.

It is an amenable number.

42513113 is a deficient number, since it is larger than the sum of its proper divisors (1).

42513113 is an equidigital number, since it uses as much as digits as its factorization.

42513113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 42513113 is about 6520.2080488279. The cubic root of 42513113 is about 349.0124898719.

Adding to 42513113 its reverse (31131524), we get a palindrome (73644637).

The spelling of 42513113 in words is "forty-two million, five hundred thirteen thousand, one hundred thirteen".