40051023 has 16 divisors (see below), whose sum is σ = 54168576. Its totient is φ = 26320320.

The previous prime is 40051021. The next prime is 40051061. The reversal of 40051023 is 32015004.

It is not a de Polignac number, because 40051023 - 2¹ = 40051021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40050993 and 40051011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40051021) 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, 87411 + ... + 87867.

It is an arithmetic number, because the mean of its divisors is an integer number (3385536).

Almost surely, 2^40051023 is an apocalyptic number.

40051023 is a deficient number, since it is larger than the sum of its proper divisors (14117553).

40051023 is a wasteful number, since it uses less digits than its factorization.

40051023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 40051023 is about 6328.5877571540. The cubic root of 40051023 is about 342.1405410551.

Adding to 40051023 its reverse (32015004), we get a palindrome (72066027).

The spelling of 40051023 in words is "forty million, fifty-one thousand, twenty-three".