40243252 has 24 divisors (see below), whose sum is σ = 81127424. Its totient is φ = 17109792.

The previous prime is 40243243. The next prime is 40243253. The reversal of 40243252 is 25234204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2103 + ... + 9214.

Almost surely, 2^40243252 is an apocalyptic number.

It is an amenable number.

40243252 is an abundant number, since it is smaller than the sum of its proper divisors (40884172).

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

40243252 is a wasteful number, since it uses less digits than its factorization.

40243252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11455 (or 11453 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 40243252 is about 6343.7569310307. The cubic root of 40243252 is about 342.6870472081.

Adding to 40243252 its reverse (25234204), we get a palindrome (65477456).

The spelling of 40243252 in words is "forty million, two hundred forty-three thousand, two hundred fifty-two".