121671544 has 16 divisors (see below), whose sum is σ = 230698800. Its totient is φ = 60151872.

The previous prime is 121671527. The next prime is 121671547. The reversal of 121671544 is 445176121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121671547) by changing a digit.

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, 84732 + ... + 86155.

It is an arithmetic number, because the mean of its divisors is an integer number (14418675).

Almost surely, 2^121671544 is an apocalyptic number.

It is an amenable number.

121671544 is a deficient number, since it is larger than the sum of its proper divisors (109027256).

121671544 is a wasteful number, since it uses less digits than its factorization.

121671544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170982 (or 170978 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 121671544 is about 11030.4824917136. The cubic root of 121671544 is about 495.5220747584.

The spelling of 121671544 in words is "one hundred twenty-one million, six hundred seventy-one thousand, five hundred forty-four".