402433523 has 2 divisors, whose sum is σ = 402433524. Its totient is φ = 402433522.

The previous prime is 402433487. The next prime is 402433541. The reversal of 402433523 is 325334204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402433523 - 2⁶ = 402433459 is a prime.

It is equal to p_21459032 and since 402433523 and 21459032 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 402433492 and 402433501.

It is not a weakly prime, because it can be changed into another prime (402433543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201216761 + 201216762.

It is an arithmetic number, because the mean of its divisors is an integer number (201216762).

Almost surely, 2^402433523 is an apocalyptic number.

402433523 is a deficient number, since it is larger than the sum of its proper divisors (1).

402433523 is an equidigital number, since it uses as much as digits as its factorization.

402433523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 402433523 is about 20060.7458236228. The cubic root of 402433523 is about 738.2974756923.

Adding to 402433523 its reverse (325334204), we get a palindrome (727767727).

The spelling of 402433523 in words is "four hundred two million, four hundred thirty-three thousand, five hundred twenty-three".