42946223 has 2 divisors, whose sum is σ = 42946224. Its totient is φ = 42946222.

The previous prime is 42946219. The next prime is 42946231. The reversal of 42946223 is 32264924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42946223 - 2² = 42946219 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42946223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42946523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21473111 + 21473112.

It is an arithmetic number, because the mean of its divisors is an integer number (21473112).

Almost surely, 2^42946223 is an apocalyptic number.

42946223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42946223 is an equidigital number, since it uses as much as digits as its factorization.

42946223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 42946223 is about 6553.3367836546. The cubic root of 42946223 is about 350.1936968662.

The spelling of 42946223 in words is "forty-two million, nine hundred forty-six thousand, two hundred twenty-three".