40222140 has 72 divisors (see below), whose sum is σ = 131018832. Its totient is φ = 9192960.

The previous prime is 40222123. The next prime is 40222141. The reversal of 40222140 is 4122204.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40222141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3901 + ... + 9780.

It is an arithmetic number, because the mean of its divisors is an integer number (1819706).

Almost surely, 2^40222140 is an apocalyptic number.

It is an amenable number.

40222140 is an abundant number, since it is smaller than the sum of its proper divisors (90796692).

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

40222140 is a wasteful number, since it uses less digits than its factorization.

40222140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13707 (or 13698 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40222140 is about 6342.0927145541. The cubic root of 40222140 is about 342.6271110772.

Adding to 40222140 its reverse (4122204), we get a palindrome (44344344).

The spelling of 40222140 in words is "forty million, two hundred twenty-two thousand, one hundred forty".