40423404 has 24 divisors (see below), whose sum is σ = 107795968. Its totient is φ = 11549520.

The previous prime is 40423387. The next prime is 40423421. The reversal of 40423404 is 40432404.

It is an interprime number because it is at equal distance from previous prime (40423387) and next prime (40423421).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240532 + ... + 240699.

Almost surely, 2^40423404 is an apocalyptic number.

It is an amenable number.

40423404 is an abundant number, since it is smaller than the sum of its proper divisors (67372564).

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

40423404 is a wasteful number, since it uses less digits than its factorization.

40423404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481245 (or 481243 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 40423404 is about 6357.9402324967. The cubic root of 40423404 is about 343.1976409986.

Adding to 40423404 its reverse (40432404), we get a palindrome (80855808).

The spelling of 40423404 in words is "forty million, four hundred twenty-three thousand, four hundred four".