132721478 has 16 divisors (see below), whose sum is σ = 210287616. Its totient is φ = 62725320.

The previous prime is 132721453. The next prime is 132721481. The reversal of 132721478 is 874127231.

It is a super-2 number, since 2×132721478² = 35229981445008968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22226 + ... + 27557.

It is an arithmetic number, because the mean of its divisors is an integer number (13142976).

Almost surely, 2^132721478 is an apocalyptic number.

132721478 is a deficient number, since it is larger than the sum of its proper divisors (77566138).

132721478 is a wasteful number, since it uses less digits than its factorization.

132721478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49859.

The product of its digits is 18816, while the sum is 35.

The square root of 132721478 is about 11520.4808059386. The cubic root of 132721478 is about 510.0903056798.

The spelling of 132721478 in words is "one hundred thirty-two million, seven hundred twenty-one thousand, four hundred seventy-eight".