402340234 has 8 divisors (see below), whose sum is σ = 613739520. Its totient is φ = 197760396.

The previous prime is 402340231. The next prime is 402340243. The reversal of 402340234 is 432043204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (402340231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704714 + ... + 1704949.

It is an arithmetic number, because the mean of its divisors is an integer number (76717440).

Almost surely, 2^402340234 is an apocalyptic number.

402340234 is a deficient number, since it is larger than the sum of its proper divisors (211399286).

402340234 is a wasteful number, since it uses less digits than its factorization.

402340234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409724.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 402340234 is about 20058.4205260534. The cubic root of 402340234 is about 738.2404224964.

Adding to 402340234 its reverse (432043204), we get a palindrome (834383438).

The spelling of 402340234 in words is "four hundred two million, three hundred forty thousand, two hundred thirty-four".