16295421 has 4 divisors (see below), whose sum is σ = 21727232. Its totient is φ = 10863612.

The previous prime is 16295413. The next prime is 16295449. The reversal of 16295421 is 12459261.

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 not a de Polignac number, because 16295421 - 2³ = 16295413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16295021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2715901 + ... + 2715906.

It is an arithmetic number, because the mean of its divisors is an integer number (5431808).

Almost surely, 2^16295421 is an apocalyptic number.

It is an amenable number.

16295421 is a deficient number, since it is larger than the sum of its proper divisors (5431811).

16295421 is an equidigital number, since it uses as much as digits as its factorization.

16295421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431810.

The product of its digits is 4320, while the sum is 30.

The square root of 16295421 is about 4036.7587245214. The cubic root of 16295421 is about 253.5256248192.

The spelling of 16295421 in words is "sixteen million, two hundred ninety-five thousand, four hundred twenty-one".