121679937 has 6 divisors (see below), whose sum is σ = 175759922. Its totient is φ = 81119952.

The previous prime is 121679917. The next prime is 121679941. The reversal of 121679937 is 739976121.

It can be written as a sum of positive squares in only one way, i.e., 104837121 + 16842816 = 10239^2 + 4104^2 .

It is a de Polignac number, because none of the positive numbers 2^k-121679937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121679892 and 121679901.

It is not an unprimeable number, because it can be changed into a prime (121679917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6759988 + ... + 6760005.

Almost surely, 2^121679937 is an apocalyptic number.

It is an amenable number.

121679937 is a deficient number, since it is larger than the sum of its proper divisors (54079985).

121679937 is a wasteful number, since it uses less digits than its factorization.

121679937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13519999 (or 13519996 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 121679937 is about 11030.8629308862. The cubic root of 121679937 is about 495.5334683322.

The spelling of 121679937 in words is "one hundred twenty-one million, six hundred seventy-nine thousand, nine hundred thirty-seven".