51243142234 has 32 divisors (see below), whose sum is σ = 83023948800. Its totient is φ = 23643854640.

The previous prime is 51243142219. The next prime is 51243142271. The reversal of 51243142234 is 43224134215.

It is a junction number, because it is equal to n+sod(n) for n = 51243142196 and 51243142205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308857 + ... + 444835.

It is an arithmetic number, because the mean of its divisors is an integer number (2594498400).

Almost surely, 2^51243142234 is an apocalyptic number.

51243142234 is a deficient number, since it is larger than the sum of its proper divisors (31780806566).

51243142234 is a wasteful number, since it uses less digits than its factorization.

51243142234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136258.

The product of its digits is 23040, while the sum is 31.

Adding to 51243142234 its reverse (43224134215), we get a palindrome (94467276449).

The spelling of 51243142234 in words is "fifty-one billion, two hundred forty-three million, one hundred forty-two thousand, two hundred thirty-four".