121320430 has 32 divisors (see below), whose sum is σ = 272263680. Its totient is φ = 37813920.

The previous prime is 121320403. The next prime is 121320481. The reversal of 121320430 is 34023121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78010 + ... + 79549.

It is an arithmetic number, because the mean of its divisors is an integer number (8508240).

Almost surely, 2^121320430 is an apocalyptic number.

121320430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121320430 is an abundant number, since it is smaller than the sum of its proper divisors (150943250).

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

121320430 is a wasteful number, since it uses less digits than its factorization.

121320430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157584.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 121320430 is about 11014.5553700547. Note that the first 3 decimals coincide. The cubic root of 121320430 is about 495.0449641160.

Adding to 121320430 its reverse (34023121), we get a palindrome (155343551).

The spelling of 121320430 in words is "one hundred twenty-one million, three hundred twenty thousand, four hundred thirty".