442461 has 4 divisors (see below), whose sum is σ = 589952. Its totient is φ = 294972.

The previous prime is 442457. The next prime is 442469. The reversal of 442461 is 164244.

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 not a de Polignac number, because 442461 - 2² = 442457 is a prime.

It is a D-number.

It is a Duffinian number.

442461 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442461.

It is not an unprimeable number, because it can be changed into a prime (442469) 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, 73741 + ... + 73746.

It is an arithmetic number, because the mean of its divisors is an integer number (147488).

2⁴⁴²⁴⁶¹ is an apocalyptic number.

It is an amenable number.

442461 is a deficient number, since it is larger than the sum of its proper divisors (147491).

442461 is a wasteful number, since it uses less digits than its factorization.

442461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147490.

The product of its digits is 768, while the sum is 21.

The square root of 442461 is about 665.1774199415. The cubic root of 442461 is about 76.2005896855.

It can be divided in two parts, 442 and 461, that added together give a triangular number (903 = T₄₂).

The spelling of 442461 in words is "four hundred forty-two thousand, four hundred sixty-one".