40202140 has 48 divisors (see below), whose sum is σ = 94366944. Its totient is φ = 14259200.

The previous prime is 40202087. The next prime is 40202153. The reversal of 40202140 is 4120204.

It is a self number, because there is not a number n which added to its sum of digits gives 40202140.

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, 6792 + ... + 11248.

It is an arithmetic number, because the mean of its divisors is an integer number (1965978).

Almost surely, 2^40202140 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 40202140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47183472).

40202140 is an abundant number, since it is smaller than the sum of its proper divisors (54164804).

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

40202140 is a wasteful number, since it uses less digits than its factorization.

40202140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518 (or 4516 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 40202140 is about 6340.5157518927. The cubic root of 40202140 is about 342.5703125220.

Adding to 40202140 its reverse (4120204), we get a palindrome (44322344).

The spelling of 40202140 in words is "forty million, two hundred two thousand, one hundred forty".