402142442234 has 16 divisors (see below), whose sum is σ = 649626818568. Its totient is φ = 185600745792.

The previous prime is 402142442203. The next prime is 402142442237. The reversal of 402142442234 is 432244241204.

It can be written as a sum of positive squares in 4 ways, for example, as 319513215025 + 82629227209 = 565255^2 + 287453^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402142442234.

It is not an unprimeable number, because it can be changed into a prime (402142442237) 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, 1745804 + ... + 1962680.

Almost surely, 2^402142442234 is an apocalyptic number.

402142442234 is a deficient number, since it is larger than the sum of its proper divisors (247484376334).

402142442234 is a wasteful number, since it uses less digits than its factorization.

402142442234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288209.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 402142442234 its reverse (432244241204), we get a palindrome (834386683438).

The spelling of 402142442234 in words is "four hundred two billion, one hundred forty-two million, four hundred forty-two thousand, two hundred thirty-four".