42054751 has 4 divisors (see below), whose sum is σ = 42145272. Its totient is φ = 41964232.

The previous prime is 42054737. The next prime is 42054757. The reversal of 42054751 is 15745024.

42054751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42054751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42054757) 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, 44560 + ... + 45493.

It is an arithmetic number, because the mean of its divisors is an integer number (10536318).

Almost surely, 2^42054751 is an apocalyptic number.

42054751 is a deficient number, since it is larger than the sum of its proper divisors (90521).

42054751 is an equidigital number, since it uses as much as digits as its factorization.

42054751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90520.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 42054751 is about 6484.9634540219. The cubic root of 42054751 is about 347.7536432953.

Adding to 42054751 its reverse (15745024), we get a palindrome (57799775).

The spelling of 42054751 in words is "forty-two million, fifty-four thousand, seven hundred fifty-one".