42347329 has 4 divisors (see below), whose sum is σ = 43248384. Its totient is φ = 41446276.

The previous prime is 42347299. The next prime is 42347341. The reversal of 42347329 is 92374324.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42347329 - 2¹⁵ = 42314561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42347294 and 42347303.

It is not an unprimeable number, because it can be changed into a prime (42387329) 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, 450457 + ... + 450550.

It is an arithmetic number, because the mean of its divisors is an integer number (10812096).

Almost surely, 2^42347329 is an apocalyptic number.

It is an amenable number.

42347329 is a deficient number, since it is larger than the sum of its proper divisors (901055).

42347329 is an equidigital number, since it uses as much as digits as its factorization.

42347329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901054.

The product of its digits is 36288, while the sum is 34.

The square root of 42347329 is about 6507.4825393542. The cubic root of 42347329 is about 348.5582295507.

The spelling of 42347329 in words is "forty-two million, three hundred forty-seven thousand, three hundred twenty-nine".