2130402042 has 12 divisors (see below), whose sum is σ = 4615871130. Its totient is φ = 710134008.

The previous prime is 2130402017. The next prime is 2130402047. The reversal of 2130402042 is 2402040312.

It can be written as a sum of positive squares in only one way, i.e., 2075804721 + 54597321 = 45561^2 + 7389^2 .

It is a super-2 number, since 2×2130402042² = 9077225721115539528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 118355669 = 2130402042 / (2 + 1 + 3 + 0 + 4 + 0 + 2 + 0 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (2130402047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59177817 + ... + 59177852.

Almost surely, 2^2130402042 is an apocalyptic number.

2130402042 is an abundant number, since it is smaller than the sum of its proper divisors (2485469088).

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

2130402042 is a wasteful number, since it uses less digits than its factorization.

2130402042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118355677 (or 118355674 counting only the distinct ones).

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

The square root of 2130402042 is about 46156.2784678314. The cubic root of 2130402042 is about 1286.7292986625.

Adding to 2130402042 its reverse (2402040312), we get a palindrome (4532442354).

The spelling of 2130402042 in words is "two billion, one hundred thirty million, four hundred two thousand, forty-two".