121363765 has 8 divisors (see below), whose sum is σ = 154203480. Its totient is φ = 91379712.

The previous prime is 121363757. The next prime is 121363777. The reversal of 121363765 is 567363121.

It can be written as a sum of positive squares in 4 ways, for example, as 6937956 + 114425809 = 2634^2 + 10697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121363765 - 2³ = 121363757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121363765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713820 + ... + 713989.

It is an arithmetic number, because the mean of its divisors is an integer number (19275435).

Almost surely, 2^121363765 is an apocalyptic number.

It is an amenable number.

121363765 is a deficient number, since it is larger than the sum of its proper divisors (32839715).

121363765 is a wasteful number, since it uses less digits than its factorization.

121363765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427831.

The product of its digits is 22680, while the sum is 34.

The square root of 121363765 is about 11016.5223641583. The cubic root of 121363765 is about 495.1038995587.

The spelling of 121363765 in words is "one hundred twenty-one million, three hundred sixty-three thousand, seven hundred sixty-five".