402130523 has 2 divisors, whose sum is σ = 402130524. Its totient is φ = 402130522.

The previous prime is 402130511. The next prime is 402130567. The reversal of 402130523 is 325031204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402130523 - 2¹⁰ = 402129499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402130495 and 402130504.

It is not a weakly prime, because it can be changed into another prime (402130423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201065261 + 201065262.

It is an arithmetic number, because the mean of its divisors is an integer number (201065262).

Almost surely, 2^402130523 is an apocalyptic number.

402130523 is a deficient number, since it is larger than the sum of its proper divisors (1).

402130523 is an equidigital number, since it uses as much as digits as its factorization.

402130523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 402130523 is about 20053.1923393758. The cubic root of 402130523 is about 738.1121363426.

Adding to 402130523 its reverse (325031204), we get a palindrome (727161727).

The spelling of 402130523 in words is "four hundred two million, one hundred thirty thousand, five hundred twenty-three".