97981042 has 4 divisors (see below), whose sum is σ = 146971566. Its totient is φ = 48990520.

The previous prime is 97981027. The next prime is 97981061. The reversal of 97981042 is 24018979.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54302161 + 43678881 = 7369^2 + 6609^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 97980986 and 97981004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24495259 + ... + 24495262.

Almost surely, 2^97981042 is an apocalyptic number.

97981042 is a deficient number, since it is larger than the sum of its proper divisors (48990524).

97981042 is a wasteful number, since it uses less digits than its factorization.

97981042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48990523.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 97981042 is about 9898.5373667022. The cubic root of 97981042 is about 461.0138978154.

The spelling of 97981042 in words is "ninety-seven million, nine hundred eighty-one thousand, forty-two".