132423640 has 32 divisors (see below), whose sum is σ = 298378080. Its totient is φ = 52893952.

The previous prime is 132423637. The next prime is 132423647. The reversal of 132423640 is 46324231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132423647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32349 + ... + 36211.

It is an arithmetic number, because the mean of its divisors is an integer number (9324315).

Almost surely, 2^132423640 is an apocalyptic number.

132423640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

132423640 is an abundant number, since it is smaller than the sum of its proper divisors (165954440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

132423640 is a wasteful number, since it uses less digits than its factorization.

132423640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731 (or 4727 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 132423640 is about 11507.5470887588. The cubic root of 132423640 is about 509.7084582596.

Adding to 132423640 its reverse (46324231), we get a palindrome (178747871).

It can be divided in two parts, 1324 and 23640, that added together give a square (24964 = 158²).

The spelling of 132423640 in words is "one hundred thirty-two million, four hundred twenty-three thousand, six hundred forty".