40133240 has 32 divisors (see below), whose sum is σ = 103200480. Its totient is φ = 13759872.

The previous prime is 40133231. The next prime is 40133267. The reversal of 40133240 is 4233104.

It is a super-2 number, since 2×40133240² = 3221353905795200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 71387 + ... + 71946.

It is an arithmetic number, because the mean of its divisors is an integer number (3225015).

Almost surely, 2^40133240 is an apocalyptic number.

40133240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40133240 is an abundant number, since it is smaller than the sum of its proper divisors (63067240).

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

40133240 is a wasteful number, since it uses less digits than its factorization.

40133240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143351 (or 143347 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40133240 is about 6335.0801099907. The cubic root of 40133240 is about 342.3744971470.

Adding to 40133240 its reverse (4233104), we get a palindrome (44366344).

The spelling of 40133240 in words is "forty million, one hundred thirty-three thousand, two hundred forty".