121898492 has 12 divisors (see below), whose sum is σ = 214440576. Its totient is φ = 60629760.

The previous prime is 121898489. The next prime is 121898503. The reversal of 121898492 is 294898121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79013 + ... + 80540.

It is an arithmetic number, because the mean of its divisors is an integer number (17870048).

Almost surely, 2^121898492 is an apocalyptic number.

It is an amenable number.

121898492 is a deficient number, since it is larger than the sum of its proper divisors (92542084).

121898492 is a wasteful number, since it uses less digits than its factorization.

121898492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159748 (or 159746 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 121898492 is about 11040.7650097265. The cubic root of 121898492 is about 495.8299744580.

The spelling of 121898492 in words is "one hundred twenty-one million, eight hundred ninety-eight thousand, four hundred ninety-two".