97542140 has 24 divisors (see below), whose sum is σ = 205117920. Its totient is φ = 38963648.

The previous prime is 97542121. The next prime is 97542161. The reversal of 97542140 is 4124579.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 97542097 and 97542106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13874 + ... + 19686.

It is an arithmetic number, because the mean of its divisors is an integer number (8546580).

Almost surely, 2^97542140 is an apocalyptic number.

It is an amenable number.

97542140 is an abundant number, since it is smaller than the sum of its proper divisors (107575780).

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

97542140 is a wasteful number, since it uses less digits than its factorization.

97542140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6661 (or 6659 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 97542140 is about 9876.3424403977. The cubic root of 97542140 is about 460.3245032271.

The spelling of 97542140 in words is "ninety-seven million, five hundred forty-two thousand, one hundred forty".