40220140 has 24 divisors (see below), whose sum is σ = 85483440. Its totient is φ = 15893568.

The previous prime is 40220137. The next prime is 40220143. The reversal of 40220140 is 4102204.

It is an interprime number because it is at equal distance from previous prime (40220137) and next prime (40220143).

It is a self number, because there is not a number n which added to its sum of digits gives 40220140.

It is not an unprimeable number, because it can be changed into a prime (40220143) 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, 10455 + ... + 13774.

It is an arithmetic number, because the mean of its divisors is an integer number (3561810).

Almost surely, 2^40220140 is an apocalyptic number.

It is an amenable number.

40220140 is an abundant number, since it is smaller than the sum of its proper divisors (45263300).

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

40220140 is a wasteful number, since it uses less digits than its factorization.

40220140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24321 (or 24319 counting only the distinct ones).

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

The square root of 40220140 is about 6341.9350359334. The cubic root of 40220140 is about 342.6214320691.

Adding to 40220140 its reverse (4102204), we get a palindrome (44322344).

The spelling of 40220140 in words is "forty million, two hundred twenty thousand, one hundred forty".