13121430 has 32 divisors (see below), whose sum is σ = 35990784. Its totient is φ = 2999136.

The previous prime is 13121429. The next prime is 13121441. The reversal of 13121430 is 3412131.

13121430 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 31032 + ... + 31451.

It is an arithmetic number, because the mean of its divisors is an integer number (1124712).

Almost surely, 2^13121430 is an apocalyptic number.

13121430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121430 is an abundant number, since it is smaller than the sum of its proper divisors (22869354).

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

13121430 is a wasteful number, since it uses less digits than its factorization.

13121430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62500.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 13121430 is about 3622.3514462294. The cubic root of 13121430 is about 235.8633101971.

Adding to 13121430 its reverse (3412131), we get a palindrome (16533561).

The spelling of 13121430 in words is "thirteen million, one hundred twenty-one thousand, four hundred thirty".