121451532 has 12 divisors (see below), whose sum is σ = 283386936. Its totient is φ = 40483840.

The previous prime is 121451531. The next prime is 121451579. The reversal of 121451532 is 235154121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (121451531) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5060469 + ... + 5060492.

It is an arithmetic number, because the mean of its divisors is an integer number (23615578).

Almost surely, 2^121451532 is an apocalyptic number.

121451532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121451532 is an abundant number, since it is smaller than the sum of its proper divisors (161935404).

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

121451532 is a wasteful number, since it uses less digits than its factorization.

121451532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10120968 (or 10120966 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 121451532 is about 11020.5050700955. The cubic root of 121451532 is about 495.2232193939.

The spelling of 121451532 in words is "one hundred twenty-one million, four hundred fifty-one thousand, five hundred thirty-two".