40144252 has 12 divisors (see below), whose sum is σ = 71242416. Its totient is φ = 19789280.

The previous prime is 40144229. The next prime is 40144301. The reversal of 40144252 is 25244104.

It is a happy number.

40144252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40144252² = 3223121937279008, 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70393 + ... + 70960.

It is an arithmetic number, because the mean of its divisors is an integer number (5936868).

Almost surely, 2^40144252 is an apocalyptic number.

It is an amenable number.

40144252 is a deficient number, since it is larger than the sum of its proper divisors (31098164).

40144252 is a wasteful number, since it uses less digits than its factorization.

40144252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141428 (or 141426 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 40144252 is about 6335.9491790891. The cubic root of 40144252 is about 342.4058085420.

Adding to 40144252 its reverse (25244104), we get a palindrome (65388356).

The spelling of 40144252 in words is "forty million, one hundred forty-four thousand, two hundred fifty-two".