42539441 has 4 divisors (see below), whose sum is σ = 48616512. Its totient is φ = 36462372.

The previous prime is 42539429. The next prime is 42539467. The reversal of 42539441 is 14493524.

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 42539441 - 2¹⁴ = 42523057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42539398 and 42539407.

It is not an unprimeable number, because it can be changed into a prime (42539941) 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, 3038525 + ... + 3038538.

It is an arithmetic number, because the mean of its divisors is an integer number (12154128).

Almost surely, 2^42539441 is an apocalyptic number.

It is an amenable number.

42539441 is a deficient number, since it is larger than the sum of its proper divisors (6077071).

42539441 is an equidigital number, since it uses as much as digits as its factorization.

42539441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6077070.

The product of its digits is 17280, while the sum is 32.

The square root of 42539441 is about 6522.2266903259. The cubic root of 42539441 is about 349.0845218011.

The spelling of 42539441 in words is "forty-two million, five hundred thirty-nine thousand, four hundred forty-one".