51442042 has 8 divisors (see below), whose sum is σ = 77436576. Its totient is φ = 25629852.

The previous prime is 51442009. The next prime is 51442043. The reversal of 51442042 is 24024415.

It is a happy number.

51442042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (51442043) 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, 44878 + ... + 46009.

It is an arithmetic number, because the mean of its divisors is an integer number (9679572).

Almost surely, 2^51442042 is an apocalyptic number.

51442042 is a deficient number, since it is larger than the sum of its proper divisors (25994534).

51442042 is a wasteful number, since it uses less digits than its factorization.

51442042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91172.

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

The square root of 51442042 is about 7172.3107852351. The cubic root of 51442042 is about 371.9113221778.

Adding to 51442042 its reverse (24024415), we get a palindrome (75466457).

The spelling of 51442042 in words is "fifty-one million, four hundred forty-two thousand, forty-two".