1442881 has 4 divisors (see below), whose sum is σ = 1574064. Its totient is φ = 1311700.

The previous prime is 1442873. The next prime is 1442887. The reversal of 1442881 is 1882441.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1882441 = 11 ⋅171131.

It is a cyclic number.

It is not a de Polignac number, because 1442881 - 2³ = 1442873 is a prime.

It is a super-2 number, since 2×1442881² = 4163811160322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442887) 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, 65575 + ... + 65596.

It is an arithmetic number, because the mean of its divisors is an integer number (393516).

2^1442881 is an apocalyptic number.

1442881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1442881 is a deficient number, since it is larger than the sum of its proper divisors (131183).

1442881 is a wasteful number, since it uses less digits than its factorization.

1442881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131182.

The product of its digits is 2048, while the sum is 28.

The square root of 1442881 is about 1201.1998168498. The cubic root of 1442881 is about 112.9995823202. Note that the first 3 decimals are identical.

It can be divided in two parts, 144 and 2881, that added together give a square (3025 = 55²).

The spelling of 1442881 in words is "one million, four hundred forty-two thousand, eight hundred eighty-one".