121280832 has 42 divisors (see below), whose sum is σ = 347631258. Its totient is φ = 40426752.

The previous prime is 121280827. The next prime is 121280833. The reversal of 121280832 is 238082121.

It can be written as a sum of positive squares in only one way, i.e., 108493056 + 12787776 = 10416^2 + 3576^2 .

It is a super-2 number, since 2×121280832² = 29418080421224448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121280796 and 121280805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121280833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104703 + ... + 105854.

Almost surely, 2^121280832 is an apocalyptic number.

121280832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121280832 is an abundant number, since it is smaller than the sum of its proper divisors (226350426).

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

121280832 is a wasteful number, since it uses less digits than its factorization.

121280832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210575 (or 210562 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 121280832 is about 11012.7576927852. The cubic root of 121280832 is about 494.9910987074.

The spelling of 121280832 in words is "one hundred twenty-one million, two hundred eighty thousand, eight hundred thirty-two".