42071803 has 4 divisors (see below), whose sum is σ = 42142408. Its totient is φ = 42001200.

The previous prime is 42071801. The next prime is 42071819. The reversal of 42071803 is 30817024.

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

It is a cyclic number.

It is not a de Polignac number, because 42071803 - 2¹ = 42071801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42071801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34401 + ... + 35602.

It is an arithmetic number, because the mean of its divisors is an integer number (10535602).

Almost surely, 2^42071803 is an apocalyptic number.

42071803 is a deficient number, since it is larger than the sum of its proper divisors (70605).

42071803 is an equidigital number, since it uses as much as digits as its factorization.

42071803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70604.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 42071803 is about 6486.2780544778. The cubic root of 42071803 is about 347.8006383331.

Adding to 42071803 its reverse (30817024), we get a palindrome (72888827).

The spelling of 42071803 in words is "forty-two million, seventy-one thousand, eight hundred three".