42403853 has 4 divisors (see below), whose sum is σ = 42480540. Its totient is φ = 42327168.

The previous prime is 42403843. The next prime is 42403859. The reversal of 42403853 is 35830424.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21409129 + 20994724 = 4627^2 + 4582^2 .

It is a cyclic number.

It is not a de Polignac number, because 42403853 - 2¹² = 42399757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42403859) 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, 37508 + ... + 38621.

It is an arithmetic number, because the mean of its divisors is an integer number (10620135).

Almost surely, 2^42403853 is an apocalyptic number.

It is an amenable number.

42403853 is a deficient number, since it is larger than the sum of its proper divisors (76687).

42403853 is an equidigital number, since it uses as much as digits as its factorization.

42403853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76686.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 42403853 is about 6511.8240916044. The cubic root of 42403853 is about 348.7132424443.

The spelling of 42403853 in words is "forty-two million, four hundred three thousand, eight hundred fifty-three".