40145272 has 16 divisors (see below), whose sum is σ = 76226400. Its totient is φ = 19818240.

The previous prime is 40145249. The next prime is 40145299. The reversal of 40145272 is 27254104.

It is a super-2 number, since 2×40145272² = 3223285727907968, 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 3 ways as a sum of consecutive naturals, for example, 31129 + ... + 32392.

It is an arithmetic number, because the mean of its divisors is an integer number (4764150).

Almost surely, 2^40145272 is an apocalyptic number.

It is an amenable number.

40145272 is a deficient number, since it is larger than the sum of its proper divisors (36081128).

40145272 is a wasteful number, since it uses less digits than its factorization.

40145272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63606 (or 63602 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 40145272 is about 6336.0296716477. The cubic root of 40145272 is about 342.4087085085.

Adding to 40145272 its reverse (27254104), we get a palindrome (67399376).

The spelling of 40145272 in words is "forty million, one hundred forty-five thousand, two hundred seventy-two".