51042424 has 16 divisors (see below), whose sum is σ = 96600600. Its totient is φ = 25282272.

The previous prime is 51042373. The next prime is 51042457. The reversal of 51042424 is 42424015.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51042395 and 51042404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28959 + ... + 30670.

Almost surely, 2^51042424 is an apocalyptic number.

It is an amenable number.

51042424 is a deficient number, since it is larger than the sum of its proper divisors (45558176).

51042424 is a wasteful number, since it uses less digits than its factorization.

51042424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59742 (or 59738 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 51042424 is about 7144.3980852133. The cubic root of 51042424 is about 370.9457761561.

Adding to 51042424 its reverse (42424015), we get a palindrome (93466439).

The spelling of 51042424 in words is "fifty-one million, forty-two thousand, four hundred twenty-four".