132740821 has 16 divisors (see below), whose sum is σ = 144930240. Its totient is φ = 121150080.

The previous prime is 132740809. The next prime is 132740827. The reversal of 132740821 is 128047231.

It is not a de Polignac number, because 132740821 - 2⁷ = 132740693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 132740821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132740827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63631 + ... + 65683.

It is an arithmetic number, because the mean of its divisors is an integer number (9058140).

Almost surely, 2^132740821 is an apocalyptic number.

It is an amenable number.

132740821 is a deficient number, since it is larger than the sum of its proper divisors (12189419).

132740821 is a wasteful number, since it uses less digits than its factorization.

132740821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 132740821 is about 11521.3202802457. The cubic root of 132740821 is about 510.1150848832.

The spelling of 132740821 in words is "one hundred thirty-two million, seven hundred forty thousand, eight hundred twenty-one".