42005623412 has 12 divisors (see below), whose sum is σ = 73555425636. Its totient is φ = 20989787520.

The previous prime is 42005623399. The next prime is 42005623447. The reversal of 42005623412 is 21432650024.

It can be written as a sum of positive squares in 2 ways, for example, as 19208851216 + 22796772196 = 138596^2 + 150986^2 .

It is a congruent 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, 3248789 + ... + 3261692.

It is an arithmetic number, because the mean of its divisors is an integer number (6129618803).

Almost surely, 2^42005623412 is an apocalyptic number.

It is an amenable number.

42005623412 is a deficient number, since it is larger than the sum of its proper divisors (31549802224).

42005623412 is a wasteful number, since it uses less digits than its factorization.

42005623412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512098 (or 6512096 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The spelling of 42005623412 in words is "forty-two billion, five million, six hundred twenty-three thousand, four hundred twelve".