402434234 has 12 divisors (see below), whose sum is σ = 641249934. Its totient is φ = 189380544.

The previous prime is 402434209. The next prime is 402434261. The reversal of 402434234 is 432434204.

It can be written as a sum of positive squares in 3 ways, for example, as 342139009 + 60295225 = 18497^2 + 7765^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 347549 + ... + 348704.

Almost surely, 2^402434234 is an apocalyptic number.

402434234 is a deficient number, since it is larger than the sum of its proper divisors (238815700).

402434234 is a wasteful number, since it uses less digits than its factorization.

402434234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696289 (or 696272 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 402434234 is about 20060.7635447906. The cubic root of 402434234 is about 738.2979104881.

Adding to 402434234 its reverse (432434204), we get a palindrome (834868438).

The spelling of 402434234 in words is "four hundred two million, four hundred thirty-four thousand, two hundred thirty-four".