42251803 has 4 divisors (see below), whose sum is σ = 46092888. Its totient is φ = 38410720.

The previous prime is 42251789. The next prime is 42251809. The reversal of 42251803 is 30815224.

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 42251803 - 2⁹ = 42251291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42251809) 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, 1920526 + ... + 1920547.

It is an arithmetic number, because the mean of its divisors is an integer number (11523222).

Almost surely, 2^42251803 is an apocalyptic number.

42251803 is a deficient number, since it is larger than the sum of its proper divisors (3841085).

42251803 is a wasteful number, since it uses less digits than its factorization.

42251803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841084.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 42251803 is about 6500.1386908281. The cubic root of 42251803 is about 348.2959427114.

It can be divided in two parts, 422 and 51803, that added together give a palindrome (52225).

The spelling of 42251803 in words is "forty-two million, two hundred fifty-one thousand, eight hundred three".