40423402 has 8 divisors (see below), whose sum is σ = 61042500. Its totient is φ = 20075904.

The previous prime is 40423387. The next prime is 40423421. The reversal of 40423402 is 20432404.

It can be written as a sum of positive squares in 2 ways, for example, as 39702601 + 720801 = 6301^2 + 849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40423402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67527 + ... + 68122.

Almost surely, 2^40423402 is an apocalyptic number.

40423402 is a deficient number, since it is larger than the sum of its proper divisors (20619098).

40423402 is a wasteful number, since it uses less digits than its factorization.

40423402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135800.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40423402 is about 6357.9400752130. The cubic root of 40423402 is about 343.1976353385.

Adding to 40423402 its reverse (20432404), we get a palindrome (60855806).

The spelling of 40423402 in words is "forty million, four hundred twenty-three thousand, four hundred two".