121974897 has 24 divisors (see below), whose sum is σ = 181250272. Its totient is φ = 72895680.

The previous prime is 121974893. The next prime is 121974997. The reversal of 121974897 is 798479121.

It is not a de Polignac number, because 121974897 - 2² = 121974893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121974893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24198 + ... + 28800.

Almost surely, 2^121974897 is an apocalyptic number.

It is an amenable number.

121974897 is a deficient number, since it is larger than the sum of its proper divisors (59275375).

121974897 is a wasteful number, since it uses less digits than its factorization.

121974897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4701 (or 4690 counting only the distinct ones).

The product of its digits is 254016, while the sum is 48.

The square root of 121974897 is about 11044.2245993098. The cubic root of 121974897 is about 495.9335469092.

The spelling of 121974897 in words is "one hundred twenty-one million, nine hundred seventy-four thousand, eight hundred ninety-seven".