42840213 has 16 divisors (see below), whose sum is σ = 61641216. Its totient is φ = 26308800.

The previous prime is 42840173. The next prime is 42840227. The reversal of 42840213 is 31204824.

It is not a de Polignac number, because 42840213 - 2²⁰ = 41791637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42840253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26556 + ... + 28122.

It is an arithmetic number, because the mean of its divisors is an integer number (3852576).

Almost surely, 2^42840213 is an apocalyptic number.

It is an amenable number.

42840213 is a deficient number, since it is larger than the sum of its proper divisors (18801003).

42840213 is a wasteful number, since it uses less digits than its factorization.

42840213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 42840213 is about 6545.2435401595. The cubic root of 42840213 is about 349.9053158844.

The spelling of 42840213 in words is "forty-two million, eight hundred forty thousand, two hundred thirteen".