402423130 has 8 divisors (see below), whose sum is σ = 724361652. Its totient is φ = 160969248.

The previous prime is 402423127. The next prime is 402423179. The reversal of 402423130 is 31324204.

It can be written as a sum of positive squares in 2 ways, for example, as 375080689 + 27342441 = 19367^2 + 5229^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 402423098 and 402423107.

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, 20121147 + ... + 20121166.

Almost surely, 2^402423130 is an apocalyptic number.

402423130 is a deficient number, since it is larger than the sum of its proper divisors (321938522).

402423130 is a wasteful number, since it uses less digits than its factorization.

402423130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40242320.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 402423130 is about 20060.4867837249. The cubic root of 402423130 is about 738.2911200325.

Adding to 402423130 its reverse (31324204), we get a palindrome (433747334).

The spelling of 402423130 in words is "four hundred two million, four hundred twenty-three thousand, one hundred thirty".