40120132 has 24 divisors (see below), whose sum is σ = 76469400. Its totient is φ = 18306816.

The previous prime is 40120121. The next prime is 40120133. The reversal of 40120132 is 23102104.

It can be written as a sum of positive squares in 4 ways, for example, as 576 + 40119556 = 24^2 + 6334^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (40120133) 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 7 ways as a sum of consecutive naturals, for example, 294 + ... + 8962.

It is an arithmetic number, because the mean of its divisors is an integer number (3186225).

Almost surely, 2^40120132 is an apocalyptic number.

It is an amenable number.

40120132 is a deficient number, since it is larger than the sum of its proper divisors (36349268).

40120132 is a wasteful number, since it uses less digits than its factorization.

40120132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8775 (or 8773 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40120132 is about 6334.0454687348. The cubic root of 40120132 is about 342.3372185421.

Adding to 40120132 its reverse (23102104), we get a palindrome (63222236).

The spelling of 40120132 in words is "forty million, one hundred twenty thousand, one hundred thirty-two".