42021033 has 4 divisors (see below), whose sum is σ = 56028048. Its totient is φ = 28014020.

The previous prime is 42021017. The next prime is 42021037. The reversal of 42021033 is 33012024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42021033 - 2⁴ = 42021017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42021037) 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, 7003503 + ... + 7003508.

It is an arithmetic number, because the mean of its divisors is an integer number (14007012).

Almost surely, 2^42021033 is an apocalyptic number.

It is an amenable number.

42021033 is a deficient number, since it is larger than the sum of its proper divisors (14007015).

42021033 is a wasteful number, since it uses less digits than its factorization.

42021033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14007014.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 42021033 is about 6482.3632264784. The cubic root of 42021033 is about 347.6606796215.

Adding to 42021033 its reverse (33012024), we get a palindrome (75033057).

Subtracting from 42021033 its reverse (33012024), we obtain a palindrome (9009009).

The spelling of 42021033 in words is "forty-two million, twenty-one thousand, thirty-three".