42024391 has 4 divisors (see below), whose sum is σ = 44496432. Its totient is φ = 39552352.

The previous prime is 42024337. The next prime is 42024401. The reversal of 42024391 is 19342024.

42024391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42024391 - 2¹³ = 42016199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42024491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235995 + ... + 1236028.

It is an arithmetic number, because the mean of its divisors is an integer number (11124108).

Almost surely, 2^42024391 is an apocalyptic number.

42024391 is a deficient number, since it is larger than the sum of its proper divisors (2472041).

42024391 is a wasteful number, since it uses less digits than its factorization.

42024391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472040.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 42024391 is about 6482.6222317824. The cubic root of 42024391 is about 347.6699401702.

The spelling of 42024391 in words is "forty-two million, twenty-four thousand, three hundred ninety-one".