42253145439 has 8 divisors (see below), whose sum is σ = 56884493952. Its totient is φ = 27895280280.

The previous prime is 42253145437. The next prime is 42253145461. The reversal of 42253145439 is 93454135224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42253145439 - 2¹ = 42253145437 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 42253145439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42253145437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68370477 + ... + 68371094.

It is an arithmetic number, because the mean of its divisors is an integer number (7110561744).

Almost surely, 2^42253145439 is an apocalyptic number.

42253145439 is a deficient number, since it is larger than the sum of its proper divisors (14631348513).

42253145439 is a wasteful number, since it uses less digits than its factorization.

42253145439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136741677.

The product of its digits is 518400, while the sum is 42.

The spelling of 42253145439 in words is "forty-two billion, two hundred fifty-three million, one hundred forty-five thousand, four hundred thirty-nine".