42559031 has 4 divisors (see below), whose sum is σ = 44799000. Its totient is φ = 40319064.

The previous prime is 42559021. The next prime is 42559043. The reversal of 42559031 is 13095524.

42559031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42559031 - 2¹⁰ = 42558007 is a prime.

It is a super-2 number, since 2×42559031² = 3622542239317922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42558985 and 42559003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42559021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119956 + ... + 1119993.

It is an arithmetic number, because the mean of its divisors is an integer number (11199750).

Almost surely, 2^42559031 is an apocalyptic number.

42559031 is the 2918-th centered decagonal number.

42559031 is a deficient number, since it is larger than the sum of its proper divisors (2239969).

42559031 is a wasteful number, since it uses less digits than its factorization.

42559031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239968.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 42559031 is about 6523.7283051948. The cubic root of 42559031 is about 349.1380996584.

The spelling of 42559031 in words is "forty-two million, five hundred fifty-nine thousand, thirty-one".