42956261 has 8 divisors (see below), whose sum is σ = 44592384. Its totient is φ = 41350320.

The previous prime is 42956257. The next prime is 42956273. The reversal of 42956261 is 16265924.

It is a happy number.

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 42956261 - 2² = 42956257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42956201) 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, 4625 + ... + 10358.

It is an arithmetic number, because the mean of its divisors is an integer number (5574048).

Almost surely, 2^42956261 is an apocalyptic number.

It is an amenable number.

42956261 is a deficient number, since it is larger than the sum of its proper divisors (1636123).

42956261 is a wasteful number, since it uses less digits than its factorization.

42956261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15091.

The product of its digits is 25920, while the sum is 35.

The square root of 42956261 is about 6554.1026082905. The cubic root of 42956261 is about 350.2209788190.

The spelling of 42956261 in words is "forty-two million, nine hundred fifty-six thousand, two hundred sixty-one".