42512201515387 has 2 divisors, whose sum is σ = 42512201515388. Its totient is φ = 42512201515386.

The previous prime is 42512201515379. The next prime is 42512201515429. The reversal of 42512201515387 is 78351510221524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42512201515387 - 2³ = 42512201515379 is a prime.

It is not a weakly prime, because it can be changed into another prime (42512201515307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256100757693 + 21256100757694.

It is an arithmetic number, because the mean of its divisors is an integer number (21256100757694).

Almost surely, 2^{42512201515387} is an apocalyptic number.

42512201515387 is a deficient number, since it is larger than the sum of its proper divisors (1).

42512201515387 is an equidigital number, since it uses as much as digits as its factorization.

42512201515387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 42512201515387 in words is "forty-two trillion, five hundred twelve billion, two hundred one million, five hundred fifteen thousand, three hundred eighty-seven".