40003023 has 8 divisors (see below), whose sum is σ = 56474928. Its totient is φ = 25099904.

The previous prime is 40003009. The next prime is 40003027. The reversal of 40003023 is 32030004.

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 40003023 - 2¹⁰ = 40001999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40003027) 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, 392136 + ... + 392237.

It is an arithmetic number, because the mean of its divisors is an integer number (7059366).

Almost surely, 2^40003023 is an apocalyptic number.

40003023 is a deficient number, since it is larger than the sum of its proper divisors (16471905).

40003023 is a wasteful number, since it uses less digits than its factorization.

40003023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784393.

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

The square root of 40003023 is about 6324.7943049557. The cubic root of 40003023 is about 342.0038045471.

Adding to 40003023 its reverse (32030004), we get a palindrome (72033027).

The spelling of 40003023 in words is "forty million, three thousand, twenty-three".