40072023 has 16 divisors (see below), whose sum is σ = 59634400. Its totient is φ = 26593920.

The previous prime is 40071979. The next prime is 40072031. The reversal of 40072023 is 32027004.

It is a happy number.

It is not a de Polignac number, because 40072023 - 2⁶ = 40071959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40071987 and 40072005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40072063) 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, 2943 + ... + 9423.

It is an arithmetic number, because the mean of its divisors is an integer number (3727150).

Almost surely, 2^40072023 is an apocalyptic number.

40072023 is a deficient number, since it is larger than the sum of its proper divisors (19562377).

40072023 is a wasteful number, since it uses less digits than its factorization.

40072023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6719 (or 6713 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 40072023 is about 6330.2466776580. The cubic root of 40072023 is about 342.2003289242.

Adding to 40072023 its reverse (32027004), we get a palindrome (72099027).

The spelling of 40072023 in words is "forty million, seventy-two thousand, twenty-three".