40310140 has 48 divisors (see below), whose sum is σ = 91742112. Its totient is φ = 14789376.

The previous prime is 40310107. The next prime is 40310167. The reversal of 40310140 is 4101304.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 40310140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50827 + ... + 51613.

It is an arithmetic number, because the mean of its divisors is an integer number (1911294).

Almost surely, 2^40310140 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 40310140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45871056).

40310140 is an abundant number, since it is smaller than the sum of its proper divisors (51431972).

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

40310140 is a wasteful number, since it uses less digits than its factorization.

40310140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40310140 is about 6349.0266970615. The cubic root of 40310140 is about 342.8768012868.

Adding to 40310140 its reverse (4101304), we get a palindrome (44411444).

The spelling of 40310140 in words is "forty million, three hundred ten thousand, one hundred forty".