402443130 has 64 divisors (see below), whose sum is σ = 987033600. Its totient is φ = 104984640.

The previous prime is 402443089. The next prime is 402443131. The reversal of 402443130 is 31344204.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 402443097 and 402443106.

It is not an unprimeable number, because it can be changed into a prime (402443131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 479251 + ... + 480089.

It is an arithmetic number, because the mean of its divisors is an integer number (15422400).

Almost surely, 2^402443130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402443130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493516800).

402443130 is an abundant number, since it is smaller than the sum of its proper divisors (584590470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402443130 is a wasteful number, since it uses less digits than its factorization.

402443130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 402443130 is about 20060.9852699213. The cubic root of 402443130 is about 738.3033505901.

Adding to 402443130 its reverse (31344204), we get a palindrome (433787334).

The spelling of 402443130 in words is "four hundred two million, four hundred forty-three thousand, one hundred thirty".