42956983 has 8 divisors (see below), whose sum is σ = 43741952. Its totient is φ = 42176376.

The previous prime is 42956959. The next prime is 42956989. The reversal of 42956983 is 38965924.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42956983 - 2⁵ = 42956951 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 (42956989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23716 + ... + 25462.

It is an arithmetic number, because the mean of its divisors is an integer number (5467744).

Almost surely, 2^42956983 is an apocalyptic number.

42956983 is a deficient number, since it is larger than the sum of its proper divisors (784969).

42956983 is a wasteful number, since it uses less digits than its factorization.

42956983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181.

The product of its digits is 466560, while the sum is 46.

The square root of 42956983 is about 6554.1576880634. The cubic root of 42956983 is about 350.2229409554. Note that the first 3 decimals are identical.

The spelling of 42956983 in words is "forty-two million, nine hundred fifty-six thousand, nine hundred eighty-three".