132540240 has 80 divisors (see below), whose sum is σ = 469577088. Its totient is φ = 30294528.

The previous prime is 132540217. The next prime is 132540269. The reversal of 132540240 is 42045231.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37767 + ... + 41126.

Almost surely, 2^132540240 is an apocalyptic number.

132540240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

132540240 is an abundant number, since it is smaller than the sum of its proper divisors (337036848).

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

132540240 is a wasteful number, since it uses less digits than its factorization.

132540240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78916 (or 78910 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 132540240 is about 11512.6122144368. The cubic root of 132540240 is about 509.8580150692.

Adding to 132540240 its reverse (42045231), we get a palindrome (174585471).

It can be divided in two parts, 132540 and 240, that multiplied together give a square (31809600 = 5640²).

The spelling of 132540240 in words is "one hundred thirty-two million, five hundred forty thousand, two hundred forty".