121861004 has 6 divisors (see below), whose sum is σ = 213256764. Its totient is φ = 60930500.

The previous prime is 121860997. The next prime is 121861013. The reversal of 121861004 is 400168121.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15232622 + ... + 15232629.

It is an arithmetic number, because the mean of its divisors is an integer number (35542794).

Almost surely, 2^121861004 is an apocalyptic number.

It is an amenable number.

121861004 is a deficient number, since it is larger than the sum of its proper divisors (91395760).

121861004 is a wasteful number, since it uses less digits than its factorization.

121861004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30465255 (or 30465253 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 121861004 is about 11039.0671707350. The cubic root of 121861004 is about 495.7791409611.

The spelling of 121861004 in words is "one hundred twenty-one million, eight hundred sixty-one thousand, four".