42582779 has 4 divisors (see below), whose sum is σ = 42768960. Its totient is φ = 42396600.

The previous prime is 42582767. The next prime is 42582791. The reversal of 42582779 is 97728524.

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

It is an interprime number because it is at equal distance from previous prime (42582767) and next prime (42582791).

It is a cyclic number.

It is not a de Polignac number, because 42582779 - 2⁴ = 42582763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42582679) 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, 92747 + ... + 93204.

It is an arithmetic number, because the mean of its divisors is an integer number (10692240).

Almost surely, 2^42582779 is an apocalyptic number.

42582779 is a deficient number, since it is larger than the sum of its proper divisors (186181).

42582779 is a wasteful number, since it uses less digits than its factorization.

42582779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186180.

The product of its digits is 282240, while the sum is 44.

The square root of 42582779 is about 6525.5481762071. The cubic root of 42582779 is about 349.2030274359.

The spelling of 42582779 in words is "forty-two million, five hundred eighty-two thousand, seven hundred seventy-nine".