42984913 has 4 divisors (see below), whose sum is σ = 43379380. Its totient is φ = 42590448.

The previous prime is 42984911. The next prime is 42984917. The reversal of 42984913 is 31948924.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13749264 + 29235649 = 3708^2 + 5407^2 .

It is a cyclic number.

It is not a de Polignac number, because 42984913 - 2¹ = 42984911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42984911) 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, 197070 + ... + 197287.

It is an arithmetic number, because the mean of its divisors is an integer number (10844845).

Almost surely, 2^42984913 is an apocalyptic number.

It is an amenable number.

42984913 is a deficient number, since it is larger than the sum of its proper divisors (394467).

42984913 is a wasteful number, since it uses less digits than its factorization.

42984913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394466.

The product of its digits is 62208, while the sum is 40.

The square root of 42984913 is about 6556.2880504139. The cubic root of 42984913 is about 350.2988277833.

The spelling of 42984913 in words is "forty-two million, nine hundred eighty-four thousand, nine hundred thirteen".