121672644 has 48 divisors (see below), whose sum is σ = 294174720. Its totient is φ = 39100320.

The previous prime is 121672633. The next prime is 121672651. The reversal of 121672644 is 446276121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140557 + ... + 141419.

It is an arithmetic number, because the mean of its divisors is an integer number (6128640).

Almost surely, 2^121672644 is an apocalyptic number.

It is an amenable number.

121672644 is an abundant number, since it is smaller than the sum of its proper divisors (172502076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121672644 is a wasteful number, since it uses less digits than its factorization.

121672644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280 (or 1278 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 121672644 is about 11030.5323534270. The cubic root of 121672644 is about 495.5235680483.

The spelling of 121672644 in words is "one hundred twenty-one million, six hundred seventy-two thousand, six hundred forty-four".