132642643 has 4 divisors (see below), whose sum is σ = 151591600. Its totient is φ = 113693688.

The previous prime is 132642613. The next prime is 132642701. The reversal of 132642643 is 346246231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 132642643 - 2²¹ = 130545491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132642613) 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, 9474468 + ... + 9474481.

It is an arithmetic number, because the mean of its divisors is an integer number (37897900).

Almost surely, 2^132642643 is an apocalyptic number.

132642643 is a deficient number, since it is larger than the sum of its proper divisors (18948957).

132642643 is an equidigital number, since it uses as much as digits as its factorization.

132642643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18948956.

The product of its digits is 20736, while the sum is 31.

The square root of 132642643 is about 11517.0587825191. The cubic root of 132642643 is about 509.9892897917.

Adding to 132642643 its reverse (346246231), we get a palindrome (478888874).

The spelling of 132642643 in words is "one hundred thirty-two million, six hundred forty-two thousand, six hundred forty-three".