16161123 has 18 divisors (see below), whose sum is σ = 23797956. Its totient is φ = 9748200.

The previous prime is 16161121. The next prime is 16161127. The reversal of 16161123 is 32116161.

It is not a de Polignac number, because 16161123 - 2¹ = 16161121 is a prime.

It is a super-2 number, since 2×16161123² = 522363793242258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16161123.

It is not an unprimeable number, because it can be changed into a prime (16161121) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 76488 + ... + 76698.

Almost surely, 2^16161123 is an apocalyptic number.

16161123 is a deficient number, since it is larger than the sum of its proper divisors (7636833).

16161123 is an equidigital number, since it uses as much as digits as its factorization.

16161123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 225 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 16161123 is about 4020.0899243674. The cubic root of 16161123 is about 252.8272292397.

Adding to 16161123 its reverse (32116161), we get a palindrome (48277284).

The spelling of 16161123 in words is "sixteen million, one hundred sixty-one thousand, one hundred twenty-three".