40422402 has 20 divisors (see below), whose sum is σ = 90576486. Its totient is φ = 13474080.

The previous prime is 40422341. The next prime is 40422407. The reversal of 40422402 is 20422404.

It can be written as a sum of positive squares in only one way, i.e., 34117281 + 6305121 = 5841^2 + 2511^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40422407) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 124599 + ... + 124922.

Almost surely, 2^40422402 is an apocalyptic number.

40422402 is an abundant number, since it is smaller than the sum of its proper divisors (50154084).

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

40422402 is a wasteful number, since it uses less digits than its factorization.

40422402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249535 (or 249526 counting only the distinct ones).

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

The square root of 40422402 is about 6357.8614329034. The cubic root of 40422402 is about 343.1948052908.

Adding to 40422402 its reverse (20422404), we get a palindrome (60844806).

The spelling of 40422402 in words is "forty million, four hundred twenty-two thousand, four hundred two".