40434023 has 8 divisors (see below), whose sum is σ = 48219648. Its totient is φ = 33150744.

The previous prime is 40434011. The next prime is 40434029. The reversal of 40434023 is 32043404.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40434023 - 2¹⁰ = 40432999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40433986 and 40434004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40434029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125411 + ... + 125732.

It is an arithmetic number, because the mean of its divisors is an integer number (6027456).

Almost surely, 2^40434023 is an apocalyptic number.

40434023 is a deficient number, since it is larger than the sum of its proper divisors (7785625).

40434023 is a wasteful number, since it uses less digits than its factorization.

40434023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251173.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 40434023 is about 6358.7752751611. The cubic root of 40434023 is about 343.2276903950.

Adding to 40434023 its reverse (32043404), we get a palindrome (72477427).

The spelling of 40434023 in words is "forty million, four hundred thirty-four thousand, twenty-three".