402434225 has 12 divisors (see below), whose sum is σ = 499318860. Its totient is φ = 321753600.

The previous prime is 402434209. The next prime is 402434261. The reversal of 402434225 is 522434204.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 63616576 + 338817649 = 7976^2 + 18407^2 .

It is not a de Polignac number, because 402434225 - 2⁴ = 402434209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402434194 and 402434203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49445 + ... + 57005.

It is an arithmetic number, because the mean of its divisors is an integer number (41609905).

Almost surely, 2^402434225 is an apocalyptic number.

It is an amenable number.

402434225 is a deficient number, since it is larger than the sum of its proper divisors (96884635).

402434225 is a wasteful number, since it uses less digits than its factorization.

402434225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9700 (or 9695 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 402434225 is about 20060.7633204721. The cubic root of 402434225 is about 738.2979049843.

Adding to 402434225 its reverse (522434204), we get a palindrome (924868429).

The spelling of 402434225 in words is "four hundred two million, four hundred thirty-four thousand, two hundred twenty-five".