402123583 has 2 divisors, whose sum is σ = 402123584. Its totient is φ = 402123582.

The previous prime is 402123577. The next prime is 402123607. The reversal of 402123583 is 385321204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402123583 - 2²⁵ = 368569151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402123523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201061791 + 201061792.

It is an arithmetic number, because the mean of its divisors is an integer number (201061792).

Almost surely, 2^402123583 is an apocalyptic number.

402123583 is a deficient number, since it is larger than the sum of its proper divisors (1).

402123583 is an equidigital number, since it uses as much as digits as its factorization.

402123583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 402123583 is about 20053.0192988487. The cubic root of 402123583 is about 738.1078901858.

Adding to 402123583 its reverse (385321204), we get a palindrome (787444787).

The spelling of 402123583 in words is "four hundred two million, one hundred twenty-three thousand, five hundred eighty-three".