132243840 has 160 divisors (see below), whose sum is σ = 472451760. Its totient is φ = 35251200.

The previous prime is 132243823. The next prime is 132243847. The reversal of 132243840 is 48342231.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132243847) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 50565 + ... + 53115.

Almost surely, 2^132243840 is an apocalyptic number.

132243840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 132243840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236225880).

132243840 is an abundant number, since it is smaller than the sum of its proper divisors (340207920).

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

132243840 is an equidigital number, since it uses as much as digits as its factorization.

132243840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582 (or 2561 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 132243840 is about 11499.7321707942. The cubic root of 132243840 is about 509.4776659082.

The spelling of 132243840 in words is "one hundred thirty-two million, two hundred forty-three thousand, eight hundred forty".