42981935 has 4 divisors (see below), whose sum is σ = 51578328. Its totient is φ = 34385544.

The previous prime is 42981931. The next prime is 42981937. The reversal of 42981935 is 53918924.

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 42981935 - 2² = 42981931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42981892 and 42981901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42981931) 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, 4298189 + ... + 4298198.

It is an arithmetic number, because the mean of its divisors is an integer number (12894582).

Almost surely, 2^42981935 is an apocalyptic number.

42981935 is a deficient number, since it is larger than the sum of its proper divisors (8596393).

42981935 is an equidigital number, since it uses as much as digits as its factorization.

42981935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8596392.

The product of its digits is 77760, while the sum is 41.

The square root of 42981935 is about 6556.0609362635. The cubic root of 42981935 is about 350.2907380147.

The spelling of 42981935 in words is "forty-two million, nine hundred eighty-one thousand, nine hundred thirty-five".