42205439388 has 48 divisors (see below), whose sum is σ = 113238352640. Its totient is φ = 11984713344.

The previous prime is 42205439281. The next prime is 42205439399. The reversal of 42205439388 is 88393450224.

It is a super-2 number, since 2×42205439388² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1527553 + ... + 1554936.

Almost surely, 2^42205439388 is an apocalyptic number.

It is an amenable number.

42205439388 is an abundant number, since it is smaller than the sum of its proper divisors (71032913252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42205439388 is a wasteful number, since it uses less digits than its factorization.

42205439388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082666 (or 3082664 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 42205439388 in words is "forty-two billion, two hundred five million, four hundred thirty-nine thousand, three hundred eighty-eight".