121656494 has 8 divisors (see below), whose sum is σ = 183577968. Its totient is φ = 60463840.

The previous prime is 121656473. The next prime is 121656511. The reversal of 121656494 is 494656121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181787 + ... + 182454.

It is an arithmetic number, because the mean of its divisors is an integer number (22947246).

Almost surely, 2^121656494 is an apocalyptic number.

121656494 is a deficient number, since it is larger than the sum of its proper divisors (61921474).

121656494 is a wasteful number, since it uses less digits than its factorization.

121656494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364410.

The product of its digits is 51840, while the sum is 38.

The square root of 121656494 is about 11029.8002701772. The cubic root of 121656494 is about 495.5016429344.

The spelling of 121656494 in words is "one hundred twenty-one million, six hundred fifty-six thousand, four hundred ninety-four".