51230042 has 32 divisors (see below), whose sum is σ = 84334080. Its totient is φ = 23250240.

The previous prime is 51230029. The next prime is 51230063. The reversal of 51230042 is 24003215.

It is a self number, because there is not a number n which added to its sum of digits gives 51230042.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184808 + ... + 185084.

It is an arithmetic number, because the mean of its divisors is an integer number (2635440).

Almost surely, 2^51230042 is an apocalyptic number.

51230042 is a deficient number, since it is larger than the sum of its proper divisors (33104038).

51230042 is a wasteful number, since it uses less digits than its factorization.

51230042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 51230042 is about 7157.5164687201. The cubic root of 51230042 is about 371.3997188492.

Adding to 51230042 its reverse (24003215), we get a palindrome (75233257).

The spelling of 51230042 in words is "fifty-one million, two hundred thirty thousand, forty-two".