42024281 has 4 divisors (see below), whose sum is σ = 45256932. Its totient is φ = 38791632.

The previous prime is 42024271. The next prime is 42024293. The reversal of 42024281 is 18242024.

It is a happy number.

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 8904256 + 33120025 = 2984^2 + 5755^2 .

It is a cyclic number.

It is not a de Polignac number, because 42024281 - 2⁶ = 42024217 is a prime.

It is a super-2 number, since 2×42024281² = 3532080387133922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42024211) 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, 1616306 + ... + 1616331.

It is an arithmetic number, because the mean of its divisors is an integer number (11314233).

Almost surely, 2^42024281 is an apocalyptic number.

It is an amenable number.

42024281 is a deficient number, since it is larger than the sum of its proper divisors (3232651).

42024281 is a wasteful number, since it uses less digits than its factorization.

42024281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232650.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 42024281 is about 6482.6137475558. The cubic root of 42024281 is about 347.6696368248.

The spelling of 42024281 in words is "forty-two million, twenty-four thousand, two hundred eighty-one".