442981 has 12 divisors (see below), whose sum is σ = 557536. Its totient is φ = 344520.

The previous prime is 442979. The next prime is 442987. The reversal of 442981 is 189244.

442981 = 60³ + 61³.

It is not a de Polignac number, because 442981 - 2¹ = 442979 is a prime.

It is a super-2 number, since 2×442981² = 392464332722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 586 + ... + 1108.

2⁴⁴²⁹⁸¹ is an apocalyptic number.

It is an amenable number.

442981 is a deficient number, since it is larger than the sum of its proper divisors (114555).

442981 is a wasteful number, since it uses less digits than its factorization.

442981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 541 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 442981 is about 665.5681783259. The cubic root of 442981 is about 76.2304294484.

It can be divided in two parts, 44 and 2981, that added together give a square (3025 = 55²).

The spelling of 442981 in words is "four hundred forty-two thousand, nine hundred eighty-one".