40212504 has 64 divisors (see below), whose sum is σ = 113097600. Its totient is φ = 13236768.

The previous prime is 40212449. The next prime is 40212509. The reversal of 40212504 is 40521204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16807 + ... + 19049.

It is an arithmetic number, because the mean of its divisors is an integer number (1767150).

Almost surely, 2^40212504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40212504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56548800).

40212504 is an abundant number, since it is smaller than the sum of its proper divisors (72885096).

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

40212504 is a wasteful number, since it uses less digits than its factorization.

40212504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341 (or 2331 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40212504 is about 6341.3329828988. The cubic root of 40212504 is about 342.5997478843.

Adding to 40212504 its reverse (40521204), we get a palindrome (80733708).

The spelling of 40212504 in words is "forty million, two hundred twelve thousand, five hundred four".