132423561 has 6 divisors (see below), whose sum is σ = 191278490. Its totient is φ = 88282368.

The previous prime is 132423539. The next prime is 132423583. The reversal of 132423561 is 165324231.

It is an interprime number because it is at equal distance from previous prime (132423539) and next prime (132423583).

It can be written as a sum of positive squares in only one way, i.e., 118135161 + 14288400 = 10869^2 + 3780^2 .

It is not a de Polignac number, because 132423561 - 2¹³ = 132415369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (132423061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7356856 + ... + 7356873.

Almost surely, 2^132423561 is an apocalyptic number.

It is an amenable number.

132423561 is a deficient number, since it is larger than the sum of its proper divisors (58854929).

132423561 is a wasteful number, since it uses less digits than its factorization.

132423561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14713735 (or 14713732 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 132423561 is about 11507.5436562283. The cubic root of 132423561 is about 509.7083569007.

Adding to 132423561 its reverse (165324231), we get a palindrome (297747792).

The spelling of 132423561 in words is "one hundred thirty-two million, four hundred twenty-three thousand, five hundred sixty-one".