42139716540 has 24 divisors (see below), whose sum is σ = 117991206480. Its totient is φ = 11237257728.

The previous prime is 42139716527. The next prime is 42139716571. The reversal of 42139716540 is 4561793124.

It is a junction number, because it is equal to n+sod(n) for n = 42139716492 and 42139716501.

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, 351164245 + ... + 351164364.

It is an arithmetic number, because the mean of its divisors is an integer number (4916300270).

Almost surely, 2^42139716540 is an apocalyptic number.

It is an amenable number.

42139716540 is an abundant number, since it is smaller than the sum of its proper divisors (75851489940).

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

42139716540 is a wasteful number, since it uses less digits than its factorization.

42139716540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702328621 (or 702328619 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 42139716540 in words is "forty-two billion, one hundred thirty-nine million, seven hundred sixteen thousand, five hundred forty".