40030023 has 16 divisors (see below), whose sum is σ = 58795776. Its totient is φ = 24023040.

The previous prime is 40029989. The next prime is 40030027. The reversal of 40030023 is 32003004.

It is not a de Polignac number, because 40030023 - 2⁸ = 40029767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40029990 and 40030008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40030027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2490 + ... + 9287.

It is an arithmetic number, because the mean of its divisors is an integer number (3674736).

Almost surely, 2^40030023 is an apocalyptic number.

40030023 is a deficient number, since it is larger than the sum of its proper divisors (18765753).

40030023 is a wasteful number, since it uses less digits than its factorization.

40030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11894.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 40030023 is about 6326.9284016812. The cubic root of 40030023 is about 342.0807322832.

Adding to 40030023 its reverse (32003004), we get a palindrome (72033027).

The spelling of 40030023 in words is "forty million, thirty thousand, twenty-three".