42586949 has 4 divisors (see below), whose sum is σ = 42657036. Its totient is φ = 42516864.

The previous prime is 42586939. The next prime is 42586981. The reversal of 42586949 is 94968524.

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 8305924 + 34281025 = 2882^2 + 5855^2 .

It is a cyclic number.

It is not a de Polignac number, because 42586949 - 2¹² = 42582853 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 (42586909) 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, 34124 + ... + 35349.

It is an arithmetic number, because the mean of its divisors is an integer number (10664259).

Almost surely, 2^42586949 is an apocalyptic number.

It is an amenable number.

42586949 is a deficient number, since it is larger than the sum of its proper divisors (70087).

42586949 is an equidigital number, since it uses as much as digits as its factorization.

42586949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70086.

The product of its digits is 622080, while the sum is 47.

The square root of 42586949 is about 6525.8676817723. The cubic root of 42586949 is about 349.2144258550.

The spelling of 42586949 in words is "forty-two million, five hundred eighty-six thousand, nine hundred forty-nine".