906042561 has 8 divisors (see below), whose sum is σ = 1209279744. Its totient is φ = 603416880.

The previous prime is 906042539. The next prime is 906042581. The reversal of 906042561 is 165240609.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 906042561 - 2⁶ = 906042497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (906042521) 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 7 ways as a sum of consecutive naturals, for example, 149406 + ... + 155351.

It is an arithmetic number, because the mean of its divisors is an integer number (151159968).

Almost surely, 2^906042561 is an apocalyptic number.

It is an amenable number.

906042561 is a deficient number, since it is larger than the sum of its proper divisors (303237183).

906042561 is a wasteful number, since it uses less digits than its factorization.

906042561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305751.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 906042561 is about 30100.5408755391. The cubic root of 906042561 is about 967.6453181290.

The spelling of 906042561 in words is "nine hundred six million, forty-two thousand, five hundred sixty-one".