121938760 has 32 divisors (see below), whose sum is σ = 276123960. Its totient is φ = 48462336.

The previous prime is 121938749. The next prime is 121938767. The reversal of 121938760 is 67839121.

It can be written as a sum of positive squares in 4 ways, for example, as 42693156 + 79245604 = 6534^2 + 8902^2 .

It is a super-2 number, since 2×121938760² = 29738122380675200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121938767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3429 + ... + 15988.

Almost surely, 2^121938760 is an apocalyptic number.

121938760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121938760 is an abundant number, since it is smaller than the sum of its proper divisors (154185200).

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

121938760 is a wasteful number, since it uses less digits than its factorization.

121938760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19585 (or 19581 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 121938760 is about 11042.5884646671. The cubic root of 121938760 is about 495.8845660092.

The spelling of 121938760 in words is "one hundred twenty-one million, nine hundred thirty-eight thousand, seven hundred sixty".