40112500 has 36 divisors (see below), whose sum is σ = 87767820. Its totient is φ = 16040000.

The previous prime is 40112491. The next prime is 40112509. The reversal of 40112500 is 521104.

It is an interprime number because it is at equal distance from previous prime (40112491) and next prime (40112509).

It can be written as a sum of positive squares in 6 ways, for example, as 32126224 + 7986276 = 5668^2 + 2826^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40112509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10896 + ... + 14104.

It is an arithmetic number, because the mean of its divisors is an integer number (2437995).

Almost surely, 2^40112500 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 40112500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43883910).

40112500 is an abundant number, since it is smaller than the sum of its proper divisors (47655320).

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

40112500 is an equidigital number, since it uses as much as digits as its factorization.

40112500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238 (or 3216 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 40112500 is about 6333.4429815070. The cubic root of 40112500 is about 342.3155097124.

Adding to 40112500 its reverse (521104), we get a palindrome (40633604).

The spelling of 40112500 in words is "forty million, one hundred twelve thousand, five hundred".