40240422 has 32 divisors (see below), whose sum is σ = 89681760. Its totient is φ = 13374720.

The previous prime is 40240399. The next prime is 40240427. The reversal of 40240422 is 22404204.

40240422 is a `hidden beast` number, since 4 + 0 + 240 + 422 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40240395 and 40240404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40240427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22522 + ... + 24242.

It is an arithmetic number, because the mean of its divisors is an integer number (2802555).

Almost surely, 2^40240422 is an apocalyptic number.

40240422 is an abundant number, since it is smaller than the sum of its proper divisors (49441338).

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

40240422 is a wasteful number, since it uses less digits than its factorization.

40240422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165 (or 2159 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 40240422 is about 6343.5338731657. The cubic root of 40240422 is about 342.6790141671.

Adding to 40240422 its reverse (22404204), we get a palindrome (62644626).

The spelling of 40240422 in words is "forty million, two hundred forty thousand, four hundred twenty-two".