121577494 has 16 divisors (see below), whose sum is σ = 190545120. Its totient is φ = 58069440.

The previous prime is 121577479. The next prime is 121577497. The reversal of 121577494 is 494775121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121577497) 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 7 ways as a sum of consecutive naturals, for example, 50764 + ... + 53104.

It is an arithmetic number, because the mean of its divisors is an integer number (11909070).

Almost surely, 2^121577494 is an apocalyptic number.

121577494 is a deficient number, since it is larger than the sum of its proper divisors (68967626).

121577494 is a wasteful number, since it uses less digits than its factorization.

121577494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495.

The product of its digits is 70560, while the sum is 40.

The square root of 121577494 is about 11026.2184814196. The cubic root of 121577494 is about 495.3943651813.

The spelling of 121577494 in words is "one hundred twenty-one million, five hundred seventy-seven thousand, four hundred ninety-four".