40512132 has 36 divisors (see below), whose sum is σ = 102600316. Its totient is φ = 13478400.

The previous prime is 40512127. The next prime is 40512137. The reversal of 40512132 is 23121504.

It is an interprime number because it is at equal distance from previous prime (40512127) and next prime (40512137).

It can be written as a sum of positive squares in 2 ways, for example, as 746496 + 39765636 = 864^2 + 6306^2 .

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 (40512137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33132 + ... + 34332.

Almost surely, 2^40512132 is an apocalyptic number.

It is an amenable number.

40512132 is an abundant number, since it is smaller than the sum of its proper divisors (62088184).

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

40512132 is a wasteful number, since it uses less digits than its factorization.

40512132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148 (or 2143 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40512132 is about 6364.9141392481. The cubic root of 40512132 is about 343.4485598937.

Adding to 40512132 its reverse (23121504), we get a palindrome (63633636).

The spelling of 40512132 in words is "forty million, five hundred twelve thousand, one hundred thirty-two".