40212023 has 4 divisors (see below), whose sum is σ = 40254408. Its totient is φ = 40169640.

The previous prime is 40212017. The next prime is 40212031. The reversal of 40212023 is 32021204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40212023 - 2⁶ = 40211959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40211989 and 40212007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19736 + ... + 21677.

It is an arithmetic number, because the mean of its divisors is an integer number (10063602).

Almost surely, 2^40212023 is an apocalyptic number.

40212023 is a deficient number, since it is larger than the sum of its proper divisors (42385).

40212023 is an equidigital number, since it uses as much as digits as its factorization.

40212023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42384.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40212023 is about 6341.2950570053. The cubic root of 40212023 is about 342.5983818818.

Adding to 40212023 its reverse (32021204), we get a palindrome (72233227).

The spelling of 40212023 in words is "forty million, two hundred twelve thousand, twenty-three".