402135466 has 8 divisors (see below), whose sum is σ = 603491364. Its totient is φ = 200971680.

The previous prime is 402135451. The next prime is 402135469. The reversal of 402135466 is 664531204.

It can be written as a sum of positive squares in 2 ways, for example, as 349877025 + 52258441 = 18705^2 + 7229^2 .

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 (402135469) 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, 42675 + ... + 51238.

Almost surely, 2^402135466 is an apocalyptic number.

402135466 is a deficient number, since it is larger than the sum of its proper divisors (201355898).

402135466 is a wasteful number, since it uses less digits than its factorization.

402135466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96056.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 402135466 is about 20053.3155862067. The cubic root of 402135466 is about 738.1151606288.

The spelling of 402135466 in words is "four hundred two million, one hundred thirty-five thousand, four hundred sixty-six".