121749960 has 64 divisors (see below), whose sum is σ = 366350400. Its totient is φ = 32368896.

The previous prime is 121749949. The next prime is 121749973. The reversal of 121749960 is 69947121.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 44142 + ... + 46818.

It is an arithmetic number, because the mean of its divisors is an integer number (5724225).

Almost surely, 2^121749960 is an apocalyptic number.

121749960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121749960 is an abundant number, since it is smaller than the sum of its proper divisors (244600440).

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

121749960 is a wasteful number, since it uses less digits than its factorization.

121749960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3070 (or 3066 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 121749960 is about 11034.0364327838. The cubic root of 121749960 is about 495.6285047779.

The spelling of 121749960 in words is "one hundred twenty-one million, seven hundred forty-nine thousand, nine hundred sixty".