42339641 has 4 divisors (see below), whose sum is σ = 42673152. Its totient is φ = 42006132.

The previous prime is 42339613. The next prime is 42339659. The reversal of 42339641 is 14693324.

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 42339641 - 2¹⁴ = 42323257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42339598 and 42339607.

It is not an unprimeable number, because it can be changed into a prime (42339601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166565 + ... + 166818.

It is an arithmetic number, because the mean of its divisors is an integer number (10668288).

Almost surely, 2^42339641 is an apocalyptic number.

It is an amenable number.

42339641 is a deficient number, since it is larger than the sum of its proper divisors (333511).

42339641 is a wasteful number, since it uses less digits than its factorization.

42339641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333510.

The product of its digits is 15552, while the sum is 32.

The square root of 42339641 is about 6506.8918079218. The cubic root of 42339641 is about 348.5371351243.

The spelling of 42339641 in words is "forty-two million, three hundred thirty-nine thousand, six hundred forty-one".