42939742540 has 24 divisors (see below), whose sum is σ = 90275618160. Its totient is φ = 17156438208.

The previous prime is 42939742511. The next prime is 42939742541. The reversal of 42939742540 is 4524793924.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42939742541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198075 + ... + 1233394.

It is an arithmetic number, because the mean of its divisors is an integer number (3761484090).

Almost surely, 2^42939742540 is an apocalyptic number.

It is an amenable number.

42939742540 is an abundant number, since it is smaller than the sum of its proper divisors (47335875620).

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

42939742540 is a wasteful number, since it uses less digits than its factorization.

42939742540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432361 (or 2432359 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 42939742540 in words is "forty-two billion, nine hundred thirty-nine million, seven hundred forty-two thousand, five hundred forty".