51002142130 has 32 divisors (see below), whose sum is σ = 97996728960. Its totient is φ = 19054909440.

The previous prime is 51002142109. The next prime is 51002142241. The reversal of 51002142130 is 3124120015.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 51002142098 and 51002142107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1876879 + ... + 1903858.

It is an arithmetic number, because the mean of its divisors is an integer number (3062397780).

Almost surely, 2^51002142130 is an apocalyptic number.

51002142130 is a deficient number, since it is larger than the sum of its proper divisors (46994586830).

51002142130 is a wasteful number, since it uses less digits than its factorization.

51002142130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780834.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 51002142130 its reverse (3124120015), we get a palindrome (54126262145).

The spelling of 51002142130 in words is "fifty-one billion, two million, one hundred forty-two thousand, one hundred thirty".