40423431342 has 32 divisors (see below), whose sum is σ = 97259385600. Its totient is φ = 10941680448.

The previous prime is 40423431311. The next prime is 40423431343. The reversal of 40423431342 is 24313432404.

It is a happy number.

It is a super-2 number, since 2×40423431342² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423431343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25327167 + ... + 25328762.

It is an arithmetic number, because the mean of its divisors is an integer number (3039355800).

Almost surely, 2^40423431342 is an apocalyptic number.

40423431342 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40423431342 is an abundant number, since it is smaller than the sum of its proper divisors (56835954258).

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

40423431342 is a wasteful number, since it uses less digits than its factorization.

40423431342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50655960.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 40423431342 its reverse (24313432404), we get a palindrome (64736863746).

The spelling of 40423431342 in words is "forty billion, four hundred twenty-three million, four hundred thirty-one thousand, three hundred forty-two".