42438439252 has 24 divisors (see below), whose sum is σ = 82742647680. Its totient is φ = 18879768960.

The previous prime is 42438439201. The next prime is 42438439261. The reversal of 42438439252 is 25293483424.

It is a super-2 number, since 2×42438439252² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10258677 + ... + 10262812.

It is an arithmetic number, because the mean of its divisors is an integer number (3447610320).

Almost surely, 2^42438439252 is an apocalyptic number.

It is an amenable number.

42438439252 is a deficient number, since it is larger than the sum of its proper divisors (40304208428).

42438439252 is a wasteful number, since it uses less digits than its factorization.

42438439252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20521551 (or 20521549 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 46.

The spelling of 42438439252 in words is "forty-two billion, four hundred thirty-eight million, four hundred thirty-nine thousand, two hundred fifty-two".