402225434 has 16 divisors (see below), whose sum is σ = 670709760. Its totient is φ = 179653680.

The previous prime is 402225431. The next prime is 402225503. The reversal of 402225434 is 434522204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (402225431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248714 + ... + 250325.

It is an arithmetic number, because the mean of its divisors is an integer number (41919360).

Almost surely, 2^402225434 is an apocalyptic number.

402225434 is a deficient number, since it is larger than the sum of its proper divisors (268484326).

402225434 is a wasteful number, since it uses less digits than its factorization.

402225434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499085.

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

The square root of 402225434 is about 20055.5586808246. The cubic root of 402225434 is about 738.1702016110.

Adding to 402225434 its reverse (434522204), we get a palindrome (836747638).

The spelling of 402225434 in words is "four hundred two million, two hundred twenty-five thousand, four hundred thirty-four".