51104142 has 64 divisors (see below), whose sum is σ = 121305600. Its totient is φ = 15891840.

The previous prime is 51104117. The next prime is 51104143. The reversal of 51104142 is 24140115.

51104142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51104142² = 5223266659112328, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51104143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164167 + ... + 164477.

It is an arithmetic number, because the mean of its divisors is an integer number (1895400).

Almost surely, 2^51104142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51104142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60652800).

51104142 is an abundant number, since it is smaller than the sum of its proper divisors (70201458).

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

51104142 is a wasteful number, since it uses less digits than its factorization.

51104142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 51104142 is about 7148.7161085051. The cubic root of 51104142 is about 371.0952257600.

Adding to 51104142 its reverse (24140115), we get a palindrome (75244257).

The spelling of 51104142 in words is "fifty-one million, one hundred four thousand, one hundred forty-two".