51742442 has 8 divisors (see below), whose sum is σ = 77645316. Its totient is φ = 25860672.

The previous prime is 51742429. The next prime is 51742463. The reversal of 51742442 is 24424715.

51742442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42915601 + 8826841 = 6551^2 + 2971^2 .

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

It is an unprimeable number.

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, 4418 + ... + 11090.

Almost surely, 2^51742442 is an apocalyptic number.

51742442 is a deficient number, since it is larger than the sum of its proper divisors (25902874).

51742442 is a wasteful number, since it uses less digits than its factorization.

51742442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10552.

The product of its digits is 8960, while the sum is 29.

The square root of 51742442 is about 7193.2219484734. The cubic root of 51742442 is about 372.6338530715.

The spelling of 51742442 in words is "fifty-one million, seven hundred forty-two thousand, four hundred forty-two".