402206434 has 32 divisors (see below), whose sum is σ = 747052416. Its totient is φ = 158457600.

The previous prime is 402206419. The next prime is 402206447. The reversal of 402206434 is 434602204.

It is a junction number, because it is equal to n+sod(n) for n = 402206399 and 402206408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9417 + ... + 29884.

It is an arithmetic number, because the mean of its divisors is an integer number (23345388).

Almost surely, 2^402206434 is an apocalyptic number.

402206434 is a deficient number, since it is larger than the sum of its proper divisors (344845982).

402206434 is a wasteful number, since it uses less digits than its factorization.

402206434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39370.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 402206434 is about 20055.0849910939. The cubic root of 402206434 is about 738.1585783988.

Adding to 402206434 its reverse (434602204), we get a palindrome (836808638).

The spelling of 402206434 in words is "four hundred two million, two hundred six thousand, four hundred thirty-four".