40342023 has 32 divisors (see below), whose sum is σ = 62899200. Its totient is φ = 25505568.

The previous prime is 40342021. The next prime is 40342039. The reversal of 40342023 is 32024304.

It is not a de Polignac number, because 40342023 - 2¹ = 40342021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40341987 and 40342005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103513 + ... + 103901.

It is an arithmetic number, because the mean of its divisors is an integer number (1965600).

Almost surely, 2^40342023 is an apocalyptic number.

40342023 is a deficient number, since it is larger than the sum of its proper divisors (22557177).

40342023 is a wasteful number, since it uses less digits than its factorization.

40342023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40342023 is about 6351.5370580671. The cubic root of 40342023 is about 342.9671760672.

Adding to 40342023 its reverse (32024304), we get a palindrome (72366327).

The spelling of 40342023 in words is "forty million, three hundred forty-two thousand, twenty-three".