642032023 has 2 divisors, whose sum is σ = 642032024. Its totient is φ = 642032022.

The previous prime is 642031991. The next prime is 642032033. The reversal of 642032023 is 320230246.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 642032023 - 2⁵ = 642031991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642031985 and 642032003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (642032033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321016011 + 321016012.

It is an arithmetic number, because the mean of its divisors is an integer number (321016012).

Almost surely, 2^642032023 is an apocalyptic number.

642032023 is a deficient number, since it is larger than the sum of its proper divisors (1).

642032023 is an equidigital number, since it uses as much as digits as its factorization.

642032023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 642032023 is about 25338.3508342591. The cubic root of 642032023 is about 862.6849667855.

Adding to 642032023 its reverse (320230246), we get a palindrome (962262269).

The spelling of 642032023 in words is "six hundred forty-two million, thirty-two thousand, twenty-three".