442240261 has 8 divisors (see below), whose sum is σ = 468780480. Its totient is φ = 415758528.

The previous prime is 442240237. The next prime is 442240273. The reversal of 442240261 is 162042244.

It is a happy number.

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

It is not a de Polignac number, because 442240261 - 2⁵ = 442240229 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 (442240661) 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, 1470 + ... + 29776.

It is an arithmetic number, because the mean of its divisors is an integer number (58597560).

Almost surely, 2^442240261 is an apocalyptic number.

It is an amenable number.

442240261 is a deficient number, since it is larger than the sum of its proper divisors (26540219).

442240261 is a wasteful number, since it uses less digits than its factorization.

442240261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29243.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 442240261 is about 21029.5092905184. The cubic root of 442240261 is about 761.8791569471.

The spelling of 442240261 in words is "four hundred forty-two million, two hundred forty thousand, two hundred sixty-one".