15430134121 has 4 divisors (see below), whose sum is σ = 15430855552. Its totient is φ = 15429412692.

The previous prime is 15430134079. The next prime is 15430134199. The reversal of 15430134121 is 12143103451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15430134121 - 2¹⁵ = 15430101353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15430131121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327621 + ... + 371746.

It is an arithmetic number, because the mean of its divisors is an integer number (3857713888).

Almost surely, 2^15430134121 is an apocalyptic number.

It is an amenable number.

15430134121 is a deficient number, since it is larger than the sum of its proper divisors (721431).

15430134121 is an equidigital number, since it uses as much as digits as its factorization.

15430134121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721430.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 15430134121 its reverse (12143103451), we get a palindrome (27573237572).

The spelling of 15430134121 in words is "fifteen billion, four hundred thirty million, one hundred thirty-four thousand, one hundred twenty-one".