121577896 has 24 divisors (see below), whose sum is σ = 250568010. Its totient is φ = 55262240.

The previous prime is 121577887. The next prime is 121577921. The reversal of 121577896 is 698775121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 104652900 + 16924996 = 10230^2 + 4114^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61831 + ... + 63766.

Almost surely, 2^121577896 is an apocalyptic number.

It is an amenable number.

121577896 is an abundant number, since it is smaller than the sum of its proper divisors (128990114).

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

121577896 is a wasteful number, since it uses less digits than its factorization.

121577896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125625 (or 125610 counting only the distinct ones).

The product of its digits is 211680, while the sum is 46.

The square root of 121577896 is about 11026.2367106824. The cubic root of 121577896 is about 495.3949111934.

The spelling of 121577896 in words is "one hundred twenty-one million, five hundred seventy-seven thousand, eight hundred ninety-six".