442220761 has 4 divisors (see below), whose sum is σ = 445596624. Its totient is φ = 438844900.

The previous prime is 442220741. The next prime is 442220767. The reversal of 442220761 is 167022244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442220761 - 2²¹ = 440123609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442220767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687735 + ... + 1687996.

It is an arithmetic number, because the mean of its divisors is an integer number (111399156).

Almost surely, 2^442220761 is an apocalyptic number.

It is an amenable number.

442220761 is a deficient number, since it is larger than the sum of its proper divisors (3375863).

442220761 is a wasteful number, since it uses less digits than its factorization.

442220761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375862.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 442220761 is about 21029.0456511940. The cubic root of 442220761 is about 761.8679587643.

The spelling of 442220761 in words is "four hundred forty-two million, two hundred twenty thousand, seven hundred sixty-one".