40431422 has 4 divisors (see below), whose sum is σ = 60647136. Its totient is φ = 20215710.

The previous prime is 40431407. The next prime is 40431431. The reversal of 40431422 is 22413404.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 40431394 and 40431403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107854 + ... + 10107857.

It is an arithmetic number, because the mean of its divisors is an integer number (15161784).

Almost surely, 2^40431422 is an apocalyptic number.

40431422 is a deficient number, since it is larger than the sum of its proper divisors (20215714).

40431422 is a wasteful number, since it uses less digits than its factorization.

40431422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20215713.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40431422 is about 6358.5707513560. The cubic root of 40431422 is about 343.2203306329.

Adding to 40431422 its reverse (22413404), we get a palindrome (62844826).

The spelling of 40431422 in words is "forty million, four hundred thirty-one thousand, four hundred twenty-two".