17421129 has 16 divisors (see below), whose sum is σ = 28155840. Its totient is φ = 10558080.

The previous prime is 17421113. The next prime is 17421133. The reversal of 17421129 is 92112471.

It is not a de Polignac number, because 17421129 - 2⁴ = 17421113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (17421109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29032 + ... + 29625.

It is an arithmetic number, because the mean of its divisors is an integer number (1759740).

Almost surely, 2^17421129 is an apocalyptic number.

It is an amenable number.

17421129 is a deficient number, since it is larger than the sum of its proper divisors (10734711).

17421129 is a wasteful number, since it uses less digits than its factorization.

17421129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58677 (or 58671 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 17421129 is about 4173.8625995593. The cubic root of 17421129 is about 259.2340822381.

The spelling of 17421129 in words is "seventeen million, four hundred twenty-one thousand, one hundred twenty-nine".