42904961 has 8 divisors (see below), whose sum is σ = 48315648. Its totient is φ = 37746000.

The previous prime is 42904933. The next prime is 42904963. The reversal of 42904961 is 16940924.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42904961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42904963) 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, 62570 + ... + 63251.

It is an arithmetic number, because the mean of its divisors is an integer number (6039456).

Almost surely, 2^42904961 is an apocalyptic number.

It is an amenable number.

42904961 is a deficient number, since it is larger than the sum of its proper divisors (5410687).

42904961 is a wasteful number, since it uses less digits than its factorization.

42904961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125863.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 42904961 is about 6550.1878599014. The cubic root of 42904961 is about 350.0815075478.

The spelling of 42904961 in words is "forty-two million, nine hundred four thousand, nine hundred sixty-one".