42427379 has 4 divisors (see below), whose sum is σ = 42448176. Its totient is φ = 42406584.

The previous prime is 42427351. The next prime is 42427409. The reversal of 42427379 is 97372424.

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 42427379 - 2²⁰ = 41378803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42427339) 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, 6959 + ... + 11544.

It is an arithmetic number, because the mean of its divisors is an integer number (10612044).

Almost surely, 2^42427379 is an apocalyptic number.

42427379 is a deficient number, since it is larger than the sum of its proper divisors (20797).

42427379 is a wasteful number, since it uses less digits than its factorization.

42427379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20796.

The product of its digits is 84672, while the sum is 38.

The square root of 42427379 is about 6513.6302474120. The cubic root of 42427379 is about 348.7777201623. Note that the first 4 decimals are identical.

The spelling of 42427379 in words is "forty-two million, four hundred twenty-seven thousand, three hundred seventy-nine".