42906117715 has 4 divisors (see below), whose sum is σ = 51487341264. Its totient is φ = 34324894168.

The previous prime is 42906117697. The next prime is 42906117721. The reversal of 42906117715 is 51771160924.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42906117715 - 2¹³ = 42906109523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4290611767 + ... + 4290611776.

It is an arithmetic number, because the mean of its divisors is an integer number (12871835316).

Almost surely, 2^42906117715 is an apocalyptic number.

42906117715 is a deficient number, since it is larger than the sum of its proper divisors (8581223549).

42906117715 is an equidigital number, since it uses as much as digits as its factorization.

42906117715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8581223548.

The product of its (nonzero) digits is 105840, while the sum is 43.

The spelling of 42906117715 in words is "forty-two billion, nine hundred six million, one hundred seventeen thousand, seven hundred fifteen".