42042853 has 6 divisors (see below), whose sum is σ = 44661746. Its totient is φ = 39569472.

The previous prime is 42042829. The next prime is 42042901. The reversal of 42042853 is 35824024.

It can be written as a sum of positive squares in 3 ways, for example, as 10029889 + 32012964 = 3167^2 + 5658^2 .

It is not a de Polignac number, because 42042853 - 2⁵ = 42042821 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 (42042823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72450 + ... + 73027.

Almost surely, 2^42042853 is an apocalyptic number.

It is an amenable number.

42042853 is a deficient number, since it is larger than the sum of its proper divisors (2618893).

42042853 is a wasteful number, since it uses less digits than its factorization.

42042853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145511 (or 145494 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 42042853 is about 6484.0460362339. The cubic root of 42042853 is about 347.7208450739.

Adding to 42042853 its reverse (35824024), we get a palindrome (77866877).

The spelling of 42042853 in words is "forty-two million, forty-two thousand, eight hundred fifty-three".