40134423 has 8 divisors (see below), whose sum is σ = 61157248. Its totient is φ = 22933944.

The previous prime is 40134421. The next prime is 40134431. The reversal of 40134423 is 32443104.

40134423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40134423 - 2¹ = 40134421 is a prime.

It is a super-2 number, since 2×40134423² = 3221543819085858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1911163 = 40134423 / (4 + 0 + 1 + 3 + 4 + 4 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40134423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40134421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955561 + ... + 955602.

It is an arithmetic number, because the mean of its divisors is an integer number (7644656).

Almost surely, 2^40134423 is an apocalyptic number.

40134423 is a deficient number, since it is larger than the sum of its proper divisors (21022825).

40134423 is a wasteful number, since it uses less digits than its factorization.

40134423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911173.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40134423 is about 6335.1734782877. The cubic root of 40134423 is about 342.3778611503.

Adding to 40134423 its reverse (32443104), we get a palindrome (72577527).

The spelling of 40134423 in words is "forty million, one hundred thirty-four thousand, four hundred twenty-three".