121281960 has 32 divisors (see below), whose sum is σ = 363846240. Its totient is φ = 32341824.

The previous prime is 121281947. The next prime is 121281971. The reversal of 121281960 is 69182121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 505222 + ... + 505461.

It is an arithmetic number, because the mean of its divisors is an integer number (11370195).

Almost surely, 2^121281960 is an apocalyptic number.

121281960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121281960 is an abundant number, since it is smaller than the sum of its proper divisors (242564280).

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

121281960 is a wasteful number, since it uses less digits than its factorization.

121281960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010697 (or 1010693 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 121281960 is about 11012.8089059967. The cubic root of 121281960 is about 494.9926332951.

The spelling of 121281960 in words is "one hundred twenty-one million, two hundred eighty-one thousand, nine hundred sixty".