121767680 has 36 divisors (see below), whose sum is σ = 291674712. Its totient is φ = 48706560.

The previous prime is 121767649. The next prime is 121767691. The reversal of 121767680 is 86767121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46286 + ... + 48845.

Almost surely, 2^121767680 is an apocalyptic number.

121767680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121767680 is an abundant number, since it is smaller than the sum of its proper divisors (169907032).

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

121767680 is an frugal number, since it uses more digits than its factorization.

121767680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95152 (or 95138 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 121767680 is about 11034.8393735478. The cubic root of 121767680 is about 495.6525488955.

The spelling of 121767680 in words is "one hundred twenty-one million, seven hundred sixty-seven thousand, six hundred eighty".