121434420 has 24 divisors (see below), whose sum is σ = 340016544. Its totient is φ = 32382496.

The previous prime is 121434419. The next prime is 121434437. The reversal of 121434420 is 24434121.

It is a congruent number.

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, 1011894 + ... + 1012013.

It is an arithmetic number, because the mean of its divisors is an integer number (14167356).

Almost surely, 2^121434420 is an apocalyptic number.

121434420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121434420 is an abundant number, since it is smaller than the sum of its proper divisors (218582124).

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

121434420 is a wasteful number, since it uses less digits than its factorization.

121434420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023919 (or 2023917 counting only the distinct ones).

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

The square root of 121434420 is about 11019.7286717959. The cubic root of 121434420 is about 495.1999600255.

Adding to 121434420 its reverse (24434121), we get a palindrome (145868541).

The spelling of 121434420 in words is "one hundred twenty-one million, four hundred thirty-four thousand, four hundred twenty".