121424430 has 32 divisors (see below), whose sum is σ = 292958208. Its totient is φ = 32208800.

The previous prime is 121424377. The next prime is 121424437. The reversal of 121424430 is 34424121.

It is a junction number, because it is equal to n+sod(n) for n = 121424397 and 121424406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121424437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4866 + ... + 16325.

It is an arithmetic number, because the mean of its divisors is an integer number (9154944).

Almost surely, 2^121424430 is an apocalyptic number.

121424430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121424430 is an abundant number, since it is smaller than the sum of its proper divisors (171533778).

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

121424430 is a wasteful number, since it uses less digits than its factorization.

121424430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21392.

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

The square root of 121424430 is about 11019.2753845251. The cubic root of 121424430 is about 495.1863801765.

Adding to 121424430 its reverse (34424121), we get a palindrome (155848551).

The spelling of 121424430 in words is "one hundred twenty-one million, four hundred twenty-four thousand, four hundred thirty".