97121240 has 32 divisors (see below), whose sum is σ = 220466880. Its totient is φ = 38502912.

The previous prime is 97121209. The next prime is 97121279. The reversal of 97121240 is 4212179.

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, 6224 + ... + 15263.

It is an arithmetic number, because the mean of its divisors is an integer number (6889590).

Almost surely, 2^97121240 is an apocalyptic number.

It is an amenable number.

97121240 is an abundant number, since it is smaller than the sum of its proper divisors (123345640).

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

97121240 is a wasteful number, since it uses less digits than its factorization.

97121240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21611 (or 21607 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 97121240 is about 9855.0109081624. The cubic root of 97121240 is about 459.6614396012.

The spelling of 97121240 in words is "ninety-seven million, one hundred twenty-one thousand, two hundred forty".