42253215385 has 4 divisors (see below), whose sum is σ = 50703858468. Its totient is φ = 33802572304.

The previous prime is 42253215377. The next prime is 42253215391. The reversal of 42253215385 is 58351235224.

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 19949585049 + 22303630336 = 141243^2 + 149344^2 .

It is a cyclic number.

It is not a de Polignac number, because 42253215385 - 2³ = 42253215377 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, 4225321534 + ... + 4225321543.

It is an arithmetic number, because the mean of its divisors is an integer number (12675964617).

Almost surely, 2^42253215385 is an apocalyptic number.

It is an amenable number.

42253215385 is a deficient number, since it is larger than the sum of its proper divisors (8450643083).

42253215385 is an equidigital number, since it uses as much as digits as its factorization.

42253215385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450643082.

The product of its digits is 288000, while the sum is 40.

The spelling of 42253215385 in words is "forty-two billion, two hundred fifty-three million, two hundred fifteen thousand, three hundred eighty-five".