42021283 has 4 divisors (see below), whose sum is σ = 42220648. Its totient is φ = 41821920.

The previous prime is 42021257. The next prime is 42021313. The reversal of 42021283 is 38212024.

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 42021283 - 2⁵ = 42021251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42021223) 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, 99366 + ... + 99787.

It is an arithmetic number, because the mean of its divisors is an integer number (10555162).

Almost surely, 2^42021283 is an apocalyptic number.

42021283 is a deficient number, since it is larger than the sum of its proper divisors (199365).

42021283 is a wasteful number, since it uses less digits than its factorization.

42021283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199364.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 42021283 is about 6482.3825095408. The cubic root of 42021283 is about 347.6613690778.

The spelling of 42021283 in words is "forty-two million, twenty-one thousand, two hundred eighty-three".