16423145 has 8 divisors (see below), whose sum is σ = 19746504. Its totient is φ = 13112704.

The previous prime is 16423133. The next prime is 16423157. The reversal of 16423145 is 54132461.

It is an interprime number because it is at equal distance from previous prime (16423133) and next prime (16423157).

It can be written as a sum of positive squares in 4 ways, for example, as 1708249 + 14714896 = 1307^2 + 3836^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16423145 - 2⁴ = 16423129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164 + ... + 5733.

It is an arithmetic number, because the mean of its divisors is an integer number (2468313).

Almost surely, 2^16423145 is an apocalyptic number.

It is an amenable number.

16423145 is a deficient number, since it is larger than the sum of its proper divisors (3323359).

16423145 is an equidigital number, since it uses as much as digits as its factorization.

16423145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459.

The product of its digits is 2880, while the sum is 26.

The square root of 16423145 is about 4052.5479639358. The cubic root of 16423145 is about 254.1862822211.

The spelling of 16423145 in words is "sixteen million, four hundred twenty-three thousand, one hundred forty-five".