42397782079 has 4 divisors (see below), whose sum is σ = 42469279776. Its totient is φ = 42326284384.

The previous prime is 42397782073. The next prime is 42397782101. The reversal of 42397782079 is 97028779324.

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 42397782079 - 2²⁷ = 42263564351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42397782073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35747959 + ... + 35749144.

It is an arithmetic number, because the mean of its divisors is an integer number (10617319944).

Almost surely, 2^42397782079 is an apocalyptic number.

42397782079 is a deficient number, since it is larger than the sum of its proper divisors (71497697).

42397782079 is an equidigital number, since it uses as much as digits as its factorization.

42397782079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71497696.

The product of its (nonzero) digits is 10668672, while the sum is 58.

The spelling of 42397782079 in words is "forty-two billion, three hundred ninety-seven million, seven hundred eighty-two thousand, seventy-nine".