42237851 has 4 divisors (see below), whose sum is σ = 42335832. Its totient is φ = 42139872.

The previous prime is 42237847. The next prime is 42237863. The reversal of 42237851 is 15873224.

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 42237851 - 2² = 42237847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42237751) 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, 48341 + ... + 49206.

It is an arithmetic number, because the mean of its divisors is an integer number (10583958).

Almost surely, 2^42237851 is an apocalyptic number.

42237851 is a deficient number, since it is larger than the sum of its proper divisors (97981).

42237851 is an equidigital number, since it uses as much as digits as its factorization.

42237851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97980.

The product of its digits is 13440, while the sum is 32.

The square root of 42237851 is about 6499.0653943471. The cubic root of 42237851 is about 348.2576014682.

The spelling of 42237851 in words is "forty-two million, two hundred thirty-seven thousand, eight hundred fifty-one".