402043834 has 4 divisors (see below), whose sum is σ = 603065754. Its totient is φ = 201021916.

The previous prime is 402043799. The next prime is 402043853. The reversal of 402043834 is 438340204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 384277609 + 17766225 = 19603^2 + 4215^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510957 + ... + 100510960.

Almost surely, 2^402043834 is an apocalyptic number.

402043834 is a deficient number, since it is larger than the sum of its proper divisors (201021920).

402043834 is a wasteful number, since it uses less digits than its factorization.

402043834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201021919.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 402043834 is about 20051.0307465726. The cubic root of 402043834 is about 738.0590931988.

The spelling of 402043834 in words is "four hundred two million, forty-three thousand, eight hundred thirty-four".