42343139 has 8 divisors (see below), whose sum is σ = 43355712. Its totient is φ = 41342400.

The previous prime is 42343111. The next prime is 42343157. The reversal of 42343139 is 93134324.

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

It is a cyclic number.

It is not a de Polignac number, because 42343139 - 2²⁰ = 41294563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42343199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4502 + ... + 10244.

It is an arithmetic number, because the mean of its divisors is an integer number (5419464).

Almost surely, 2^42343139 is an apocalyptic number.

42343139 is a deficient number, since it is larger than the sum of its proper divisors (1012573).

42343139 is a wasteful number, since it uses less digits than its factorization.

42343139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5917.

The product of its digits is 7776, while the sum is 29.

The square root of 42343139 is about 6507.1605942992. The cubic root of 42343139 is about 348.5467332951.

The spelling of 42343139 in words is "forty-two million, three hundred forty-three thousand, one hundred thirty-nine".