42347678 has 8 divisors (see below), whose sum is σ = 64176672. Its totient is φ = 20955456.

The previous prime is 42347677. The next prime is 42347681. The reversal of 42347678 is 87674324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42347677) 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, 108950 + ... + 109337.

It is an arithmetic number, because the mean of its divisors is an integer number (8022084).

Almost surely, 2^42347678 is an apocalyptic number.

42347678 is a deficient number, since it is larger than the sum of its proper divisors (21828994).

42347678 is a wasteful number, since it uses less digits than its factorization.

42347678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218386.

The product of its digits is 225792, while the sum is 41.

The square root of 42347678 is about 6507.5093545841. The cubic root of 42347678 is about 348.5591870805.

The spelling of 42347678 in words is "forty-two million, three hundred forty-seven thousand, six hundred seventy-eight".