40423232 has 14 divisors (see below), whose sum is σ = 80214978. Its totient is φ = 20211584.

The previous prime is 40423231. The next prime is 40423237. The reversal of 40423232 is 23232404.

It can be written as a sum of positive squares in only one way, i.e., 36675136 + 3748096 = 6056^2 + 1936^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423231) 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 as a sum of consecutive naturals, namely, 315743 + ... + 315870.

Almost surely, 2^40423232 is an apocalyptic number.

It is an amenable number.

40423232 is a deficient number, since it is larger than the sum of its proper divisors (39791746).

40423232 is an equidigital number, since it uses as much as digits as its factorization.

40423232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631625 (or 631615 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 40423232 is about 6357.9267060890. The cubic root of 40423232 is about 343.1971542337.

Adding to 40423232 its reverse (23232404), we get a palindrome (63655636).

The spelling of 40423232 in words is "forty million, four hundred twenty-three thousand, two hundred thirty-two".