40022140 has 24 divisors (see below), whose sum is σ = 84494592. Its totient is φ = 15923520.

The previous prime is 40022137. The next prime is 40022149. The reversal of 40022140 is 4122004.

It is a self number, because there is not a number n which added to its sum of digits gives 40022140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40022149) 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, 1419 + ... + 9058.

It is an arithmetic number, because the mean of its divisors is an integer number (3520608).

Almost surely, 2^40022140 is an apocalyptic number.

It is an amenable number.

40022140 is an abundant number, since it is smaller than the sum of its proper divisors (44472452).

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

40022140 is a wasteful number, since it uses less digits than its factorization.

40022140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10677 (or 10675 counting only the distinct ones).

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

The square root of 40022140 is about 6326.3053988880. The cubic root of 40022140 is about 342.0582758097.

Adding to 40022140 its reverse (4122004), we get a palindrome (44144144).

The spelling of 40022140 in words is "forty million, twenty-two thousand, one hundred forty".