42903561 has 8 divisors (see below), whose sum is σ = 58174560. Its totient is φ = 28117472.

The previous prime is 42903559. The next prime is 42903571. The reversal of 42903561 is 16530924.

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

It is a cyclic number.

It is not a de Polignac number, because 42903561 - 2¹ = 42903559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42903541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121020 + ... + 121373.

It is an arithmetic number, because the mean of its divisors is an integer number (7271820).

Almost surely, 2^42903561 is an apocalyptic number.

It is an amenable number.

42903561 is a deficient number, since it is larger than the sum of its proper divisors (15270999).

42903561 is a wasteful number, since it uses less digits than its factorization.

42903561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242455.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 42903561 is about 6550.0809918657. The cubic root of 42903561 is about 350.0776997562.

The spelling of 42903561 in words is "forty-two million, nine hundred three thousand, five hundred sixty-one".