42547615457 has 4 divisors (see below), whose sum is σ = 42556772100. Its totient is φ = 42538458816.

The previous prime is 42547615433. The next prime is 42547615489. The reversal of 42547615457 is 75451674524.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33023612176 + 9524003281 = 181724^2 + 97591^2 .

It is a cyclic number.

It is not a de Polignac number, because 42547615457 - 2⁶ = 42547615393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42547615417) 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, 4571348 + ... + 4580645.

It is an arithmetic number, because the mean of its divisors is an integer number (10639193025).

Almost surely, 2^42547615457 is an apocalyptic number.

It is an amenable number.

42547615457 is a deficient number, since it is larger than the sum of its proper divisors (9156643).

42547615457 is an equidigital number, since it uses as much as digits as its factorization.

42547615457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9156642.

The product of its digits is 4704000, while the sum is 50.

The spelling of 42547615457 in words is "forty-two billion, five hundred forty-seven million, six hundred fifteen thousand, four hundred fifty-seven".