240420132 has 36 divisors (see below), whose sum is σ = 608231260. Its totient is φ = 80073792.

The previous prime is 240420107. The next prime is 240420133. The reversal of 240420132 is 231024042.

240420132 is a `hidden beast` number, since 240 + 420 + 1 + 3 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 187799616 + 52620516 = 13704^2 + 7254^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (240420133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62538 + ... + 66270.

Almost surely, 2^240420132 is an apocalyptic number.

It is an amenable number.

240420132 is an abundant number, since it is smaller than the sum of its proper divisors (367811128).

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

240420132 is a wasteful number, since it uses less digits than its factorization.

240420132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532 (or 5527 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 240420132 is about 15505.4871577774. The cubic root of 240420132 is about 621.8089141898.

Adding to 240420132 its reverse (231024042), we get a palindrome (471444174).

The spelling of 240420132 in words is "two hundred forty million, four hundred twenty thousand, one hundred thirty-two".