40252542 has 16 divisors (see below), whose sum is σ = 87823872. Its totient is φ = 12197720.

The previous prime is 40252519. The next prime is 40252547. The reversal of 40252542 is 24525204.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40252547) 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, 304878 + ... + 305009.

It is an arithmetic number, because the mean of its divisors is an integer number (5488992).

Almost surely, 2^40252542 is an apocalyptic number.

40252542 is an abundant number, since it is smaller than the sum of its proper divisors (47571330).

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

40252542 is a wasteful number, since it uses less digits than its factorization.

40252542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609903.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 40252542 is about 6344.4891047270. The cubic root of 40252542 is about 342.7134145084.

Adding to 40252542 its reverse (24525204), we get a palindrome (64777746).

It can be divided in two parts, 4025254 and 2, that multiplied together give a palindrome (8050508).

The spelling of 40252542 in words is "forty million, two hundred fifty-two thousand, five hundred forty-two".