51424142 has 16 divisors (see below), whose sum is σ = 96170112. Its totient is φ = 20035320.

The previous prime is 51424141. The next prime is 51424171. The reversal of 51424142 is 24142415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51424141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166808 + ... + 167115.

It is an arithmetic number, because the mean of its divisors is an integer number (6010632).

Almost surely, 2^51424142 is an apocalyptic number.

51424142 is a deficient number, since it is larger than the sum of its proper divisors (44745970).

51424142 is a wasteful number, since it uses less digits than its factorization.

51424142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333943.

The product of its digits is 1280, while the sum is 23.

The square root of 51424142 is about 7171.0628222043. The cubic root of 51424142 is about 371.8681798716.

Adding to 51424142 its reverse (24142415), we get a palindrome (75566557).

The spelling of 51424142 in words is "fifty-one million, four hundred twenty-four thousand, one hundred forty-two".