42739453420 has 12 divisors (see below), whose sum is σ = 89752852224. Its totient is φ = 17095781360.

The previous prime is 42739453391. The next prime is 42739453469. The reversal of 42739453420 is 2435493724.

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, 1068486316 + ... + 1068486355.

It is an arithmetic number, because the mean of its divisors is an integer number (7479404352).

Almost surely, 2^42739453420 is an apocalyptic number.

It is an amenable number.

42739453420 is an abundant number, since it is smaller than the sum of its proper divisors (47013398804).

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

42739453420 is a wasteful number, since it uses less digits than its factorization.

42739453420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136972680 (or 2136972678 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 43.

The spelling of 42739453420 in words is "forty-two billion, seven hundred thirty-nine million, four hundred fifty-three thousand, four hundred twenty".