42102623513 has 2 divisors, whose sum is σ = 42102623514. Its totient is φ = 42102623512.

The previous prime is 42102623477. The next prime is 42102623561. The reversal of 42102623513 is 31532620124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22054329049 + 20048294464 = 148507^2 + 141592^2 .

It is a cyclic number.

It is not a de Polignac number, because 42102623513 - 2⁶ = 42102623449 is a prime.

It is a super-2 number, since 2×42102623513² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42102653513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21051311756 + 21051311757.

It is an arithmetic number, because the mean of its divisors is an integer number (21051311757).

Almost surely, 2^42102623513 is an apocalyptic number.

It is an amenable number.

42102623513 is a deficient number, since it is larger than the sum of its proper divisors (1).

42102623513 is an equidigital number, since it uses as much as digits as its factorization.

42102623513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 42102623513 in words is "forty-two billion, one hundred two million, six hundred twenty-three thousand, five hundred thirteen".