402423323324173 has 2 divisors, whose sum is σ = 402423323324174. Its totient is φ = 402423323324172.

The previous prime is 402423323324093. The next prime is 402423323324249. The reversal of 402423323324173 is 371423323324204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 359283609029284 + 43139714294889 = 18954778^2 + 6568083^2 .

It is a cyclic number.

It is not a de Polignac number, because 402423323324173 - 2²¹ = 402423321227021 is a prime.

It is a super-2 number, since 2×402423323324173² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402423323624173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201211661662086 + 201211661662087.

It is an arithmetic number, because the mean of its divisors is an integer number (201211661662087).

Almost surely, 2^{402423323324173} is an apocalyptic number.

It is an amenable number.

402423323324173 is a deficient number, since it is larger than the sum of its proper divisors (1).

402423323324173 is an equidigital number, since it uses as much as digits as its factorization.

402423323324173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 43.

Adding to 402423323324173 its reverse (371423323324204), we get a palindrome (773846646648377).

The spelling of 402423323324173 in words is "four hundred two trillion, four hundred twenty-three billion, three hundred twenty-three million, three hundred twenty-four thousand, one hundred seventy-three".