121404432 has 80 divisors (see below), whose sum is σ = 327979008. Its totient is φ = 38651520.

The previous prime is 121404383. The next prime is 121404449. The reversal of 121404432 is 234404121.

It is a super-2 number, since 2×121404432² = 29478072218485248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121404399 and 121404408.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 123013 + ... + 123995.

Almost surely, 2^121404432 is an apocalyptic number.

121404432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121404432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163989504).

121404432 is an abundant number, since it is smaller than the sum of its proper divisors (206574576).

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

121404432 is a wasteful number, since it uses less digits than its factorization.

121404432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1102 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 121404432 is about 11018.3679372219. The cubic root of 121404432 is about 495.1591937722.

Adding to 121404432 its reverse (234404121), we get a palindrome (355808553).

The spelling of 121404432 in words is "one hundred twenty-one million, four hundred four thousand, four hundred thirty-two".