42646343 has 4 divisors (see below), whose sum is σ = 43553760. Its totient is φ = 41738928.

The previous prime is 42646267. The next prime is 42646349. The reversal of 42646343 is 34364624.

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 42646343 - 2¹⁰ = 42645319 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 (42646349) 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, 453638 + ... + 453731.

It is an arithmetic number, because the mean of its divisors is an integer number (10888440).

Almost surely, 2^42646343 is an apocalyptic number.

42646343 is a deficient number, since it is larger than the sum of its proper divisors (907417).

42646343 is an equidigital number, since it uses as much as digits as its factorization.

42646343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907416.

The product of its digits is 41472, while the sum is 32.

The square root of 42646343 is about 6530.4167554606. The cubic root of 42646343 is about 349.3766947135.

The spelling of 42646343 in words is "forty-two million, six hundred forty-six thousand, three hundred forty-three".