7242155880 has 32 divisors (see below), whose sum is σ = 21726468000. Its totient is φ = 1931241536.

The previous prime is 7242155863. The next prime is 7242155917. The reversal of 7242155880 is 885512427.

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, 30175530 + ... + 30175769.

It is an arithmetic number, because the mean of its divisors is an integer number (678952125).

Almost surely, 2^7242155880 is an apocalyptic number.

It is an amenable number.

7242155880 is an abundant number, since it is smaller than the sum of its proper divisors (14484312120).

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

7242155880 is a wasteful number, since it uses less digits than its factorization.

7242155880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60351313 (or 60351309 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 42.

The square root of 7242155880 is about 85100.8571049669. The cubic root of 7242155880 is about 1934.7400541512.

The spelling of 7242155880 in words is "seven billion, two hundred forty-two million, one hundred fifty-five thousand, eight hundred eighty".