132721479 has 48 divisors (see below), whose sum is σ = 226212480. Its totient is φ = 74105280.

The previous prime is 132721453. The next prime is 132721481. The reversal of 132721479 is 974127231.

It is a de Polignac number, because none of the positive numbers 2^k-132721479 is a prime.

It is a super-2 number, since 2×132721479² = 35229981975894882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132721489) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68644 + ... + 70550.

It is an arithmetic number, because the mean of its divisors is an integer number (4712760).

Almost surely, 2^132721479 is an apocalyptic number.

132721479 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

132721479 is a deficient number, since it is larger than the sum of its proper divisors (93491001).

132721479 is a wasteful number, since it uses less digits than its factorization.

132721479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980 (or 1977 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 132721479 is about 11520.4808493396. The cubic root of 132721479 is about 510.0903069609.

The spelling of 132721479 in words is "one hundred thirty-two million, seven hundred twenty-one thousand, four hundred seventy-nine".