42380879 has 4 divisors (see below), whose sum is σ = 42891576. Its totient is φ = 41870184.

The previous prime is 42380837. The next prime is 42380957. The reversal of 42380879 is 97808324.

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 42380879 - 2⁸ = 42380623 is a prime.

It is a super-2 number, since 2×42380879² = 3592277809625282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42380479) 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, 255224 + ... + 255389.

It is an arithmetic number, because the mean of its divisors is an integer number (10722894).

Almost surely, 2^42380879 is an apocalyptic number.

42380879 is a deficient number, since it is larger than the sum of its proper divisors (510697).

42380879 is an equidigital number, since it uses as much as digits as its factorization.

42380879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510696.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 42380879 is about 6510.0598307542. The cubic root of 42380879 is about 348.6502545731.

The spelling of 42380879 in words is "forty-two million, three hundred eighty thousand, eight hundred seventy-nine".