42050045 has 8 divisors (see below), whose sum is σ = 51287640. Its totient is φ = 33088320.

The previous prime is 42050039. The next prime is 42050053. The reversal of 42050045 is 54005024.

It is a happy number.

42050045 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 4 ways, for example, as 3286969 + 38763076 = 1813^2 + 6226^2 .

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

It is not a de Polignac number, because 42050045 - 2²⁰ = 41001469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42049999 and 42050026.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 68630 + ... + 69239.

It is an arithmetic number, because the mean of its divisors is an integer number (6410955).

Almost surely, 2^42050045 is an apocalyptic number.

It is an amenable number.

42050045 is a deficient number, since it is larger than the sum of its proper divisors (9237595).

42050045 is a wasteful number, since it uses less digits than its factorization.

42050045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137935.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 42050045 is about 6484.6006045091. The cubic root of 42050045 is about 347.7406713983.

Adding to 42050045 its reverse (54005024), we get a palindrome (96055069).

It can be divided in two parts, 420500 and 45, that multiplied together give a square (18922500 = 4350²).

The spelling of 42050045 in words is "forty-two million, fifty thousand, forty-five".