163420402 has 8 divisors (see below), whose sum is σ = 245185200. Its totient is φ = 81692004.

The previous prime is 163420393. The next prime is 163420429. The reversal of 163420402 is 204024361.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11049 + ... + 21187.

It is an arithmetic number, because the mean of its divisors is an integer number (30648150).

Almost surely, 2^163420402 is an apocalyptic number.

163420402 is a deficient number, since it is larger than the sum of its proper divisors (81764798).

163420402 is a wasteful number, since it uses less digits than its factorization.

163420402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18200.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 163420402 is about 12783.5989455239. The cubic root of 163420402 is about 546.7247795813.

Adding to 163420402 its reverse (204024361), we get a palindrome (367444763).

The spelling of 163420402 in words is "one hundred sixty-three million, four hundred twenty thousand, four hundred two".