121772764 has 24 divisors (see below), whose sum is σ = 222768000. Its totient is φ = 58134384.

The previous prime is 121772759. The next prime is 121772773. The reversal of 121772764 is 467277121.

It is a congruent number.

It is an unprimeable number.

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, 80487 + ... + 81985.

It is an arithmetic number, because the mean of its divisors is an integer number (9282000).

Almost surely, 2^121772764 is an apocalyptic number.

It is an amenable number.

121772764 is a deficient number, since it is larger than the sum of its proper divisors (100995236).

121772764 is a wasteful number, since it uses less digits than its factorization.

121772764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409 (or 2407 counting only the distinct ones).

The product of its digits is 32928, while the sum is 37.

The square root of 121772764 is about 11035.0697324485. The cubic root of 121772764 is about 495.6594469013.

It can be divided in two parts, 12177 and 2764, that added together give a palindrome (14941).

The spelling of 121772764 in words is "one hundred twenty-one million, seven hundred seventy-two thousand, seven hundred sixty-four".