121430420 has 48 divisors (see below), whose sum is σ = 262716048. Its totient is φ = 47124480.

The previous prime is 121430383. The next prime is 121430423. The reversal of 121430420 is 24034121.

It can be written as a sum of positive squares in 8 ways, for example, as 8305924 + 113124496 = 2882^2 + 10636^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121430423) 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, 102230 + ... + 103410.

It is an arithmetic number, because the mean of its divisors is an integer number (5473251).

Almost surely, 2^121430420 is an apocalyptic number.

121430420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121430420 is an abundant number, since it is smaller than the sum of its proper divisors (141285628).

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

121430420 is a wasteful number, since it uses less digits than its factorization.

121430420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 121430420 is about 11019.5471776294. The cubic root of 121430420 is about 495.1945227379.

Adding to 121430420 its reverse (24034121), we get a palindrome (145464541).

The spelling of 121430420 in words is "one hundred twenty-one million, four hundred thirty thousand, four hundred twenty".