7880042840 has 32 divisors (see below), whose sum is σ = 17760876480. Its totient is φ = 3146545152.

The previous prime is 7880042813. The next prime is 7880042851. The reversal of 7880042840 is 482400887.

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, 147632 + ... + 193791.

It is an arithmetic number, because the mean of its divisors is an integer number (555027390).

Almost surely, 2^7880042840 is an apocalyptic number.

It is an amenable number.

7880042840 is an abundant number, since it is smaller than the sum of its proper divisors (9880833640).

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

7880042840 is a wasteful number, since it uses less digits than its factorization.

7880042840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342011 (or 342007 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 7880042840 is about 88769.6053838249. The cubic root of 7880042840 is about 1989.9531852660.

The spelling of 7880042840 in words is "seven billion, eight hundred eighty million, forty-two thousand, eight hundred forty".