121577044 has 12 divisors (see below), whose sum is σ = 212886324. Its totient is φ = 60752384.

The previous prime is 121577041. The next prime is 121577051. The reversal of 121577044 is 440775121.

It can be written as a sum of positive squares in 2 ways, for example, as 103836100 + 17740944 = 10190^2 + 4212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121576997 and 121577015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121577041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589 + ... + 15604.

It is an arithmetic number, because the mean of its divisors is an integer number (17740527).

Almost surely, 2^121577044 is an apocalyptic number.

It is an amenable number.

121577044 is a deficient number, since it is larger than the sum of its proper divisors (91309280).

121577044 is a wasteful number, since it uses less digits than its factorization.

121577044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18074 (or 18072 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 121577044 is about 11026.1980754927. The cubic root of 121577044 is about 495.3937539724.

The spelling of 121577044 in words is "one hundred twenty-one million, five hundred seventy-seven thousand, forty-four".