40221023 has 2 divisors, whose sum is σ = 40221024. Its totient is φ = 40221022.

The previous prime is 40221019. The next prime is 40221047. The reversal of 40221023 is 32012204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40221023 - 2² = 40221019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40220989 and 40221007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40221073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110511 + 20110512.

It is an arithmetic number, because the mean of its divisors is an integer number (20110512).

Almost surely, 2^40221023 is an apocalyptic number.

40221023 is a deficient number, since it is larger than the sum of its proper divisors (1).

40221023 is an equidigital number, since it uses as much as digits as its factorization.

40221023 is an evil number, because the sum of its binary digits is even.

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

The square root of 40221023 is about 6342.0046515278. The cubic root of 40221023 is about 342.6239393744.

Adding to 40221023 its reverse (32012204), we get a palindrome (72233227).

The spelling of 40221023 in words is "forty million, two hundred twenty-one thousand, twenty-three".