42825479 has 4 divisors (see below), whose sum is σ = 43088376. Its totient is φ = 42562584.

The previous prime is 42825473. The next prime is 42825481. The reversal of 42825479 is 97452824.

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 42825479 - 2²⁴ = 26048263 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 (42825473) 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, 131204 + ... + 131529.

It is an arithmetic number, because the mean of its divisors is an integer number (10772094).

Almost surely, 2^42825479 is an apocalyptic number.

42825479 is a deficient number, since it is larger than the sum of its proper divisors (262897).

42825479 is a wasteful number, since it uses less digits than its factorization.

42825479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262896.

The product of its digits is 161280, while the sum is 41.

The square root of 42825479 is about 6544.1178931923. The cubic root of 42825479 is about 349.8651970667.

The spelling of 42825479 in words is "forty-two million, eight hundred twenty-five thousand, four hundred seventy-nine".