2130420402 has 48 divisors (see below), whose sum is σ = 5254486848. Its totient is φ = 617511840.

The previous prime is 2130420367. The next prime is 2130420403. The reversal of 2130420402 is 2040240312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2130420403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229353 + ... + 238460.

It is an arithmetic number, because the mean of its divisors is an integer number (109468476).

Almost surely, 2^2130420402 is an apocalyptic number.

2130420402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2130420402 is an abundant number, since it is smaller than the sum of its proper divisors (3124066446).

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

2130420402 is a wasteful number, since it uses less digits than its factorization.

2130420402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467855 (or 467852 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2130420402 is about 46156.4773569214. The cubic root of 2130420402 is about 1286.7329950355.

Adding to 2130420402 its reverse (2040240312), we get a palindrome (4170660714).

The spelling of 2130420402 in words is "two billion, one hundred thirty million, four hundred twenty thousand, four hundred two".