42561356 has 6 divisors (see below), whose sum is σ = 74482380. Its totient is φ = 21280676.

The previous prime is 42561341. The next prime is 42561377. The reversal of 42561356 is 65316524.

42561356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42561356² = 3622938049117472, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5320166 + ... + 5320173.

It is an arithmetic number, because the mean of its divisors is an integer number (12413730).

Almost surely, 2^42561356 is an apocalyptic number.

It is an amenable number.

42561356 is a deficient number, since it is larger than the sum of its proper divisors (31921024).

42561356 is a wasteful number, since it uses less digits than its factorization.

42561356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10640343 (or 10640341 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 42561356 is about 6523.9064984103. The cubic root of 42561356 is about 349.1444573478.

The spelling of 42561356 in words is "forty-two million, five hundred sixty-one thousand, three hundred fifty-six".