51422142 has 8 divisors (see below), whose sum is σ = 102844296. Its totient is φ = 17140712.

The previous prime is 51422141. The next prime is 51422143. The reversal of 51422142 is 24122415.

51422142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51422141) and next prime (51422143).

It is a sphenic number, since it is the product of 3 distinct primes.

51422142 is an admirable number.

It is a super-3 number, since 3×51422142³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51422141) 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 3 ways as a sum of consecutive naturals, for example, 4285173 + ... + 4285184.

It is an arithmetic number, because the mean of its divisors is an integer number (12855537).

Almost surely, 2^51422142 is an apocalyptic number.

51422142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51422142 is a wasteful number, since it uses less digits than its factorization.

51422142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8570362.

The product of its digits is 640, while the sum is 21.

The square root of 51422142 is about 7170.9233715052. The cubic root of 51422142 is about 371.8633588805.

Adding to 51422142 its reverse (24122415), we get a palindrome (75544557).

The spelling of 51422142 in words is "fifty-one million, four hundred twenty-two thousand, one hundred forty-two".