Search a number
1442 = 27103
BaseRepresentation
bin10110100010
31222102
4112202
521232
610402
74130
oct2642
91872
101442
1110a1
12a02
1386c
14750
15662
hex5a2

1442 has 8 divisors (see below), whose sum is σ = 2496. Its totient is φ = 612.

The previous prime is 1439. The next prime is 1447. The reversal of 1442 is 2441.

Subtracting from 1442 its sum of digits (11), we obtain a triangular number (1431 = T53).

Adding to 1442 its reverse (2441), we get a palindrome (3883).

Subtracting 1442 from its reverse (2441), we obtain a palindrome (999).

1442 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

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

1442 is a modest number, since divided by 42 gives 14 as remainder.

It is a nialpdrome in base 14 and base 15.

It is not an unprimeable number, because it can be changed into a prime (1447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38 + ... + 65.

It is an arithmetic number, because the mean of its divisors is an integer number (312).

1442 is a deficient number, since it is larger than the sum of its proper divisors (1054).

1442 is a wasteful number, since it uses less digits than its factorization.

1442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112.

The product of its digits is 32, while the sum is 11.

The square root of 1442 is about 37.9736750921. The cubic root of 1442 is about 11.2976579060.

The spelling of 1442 in words is "one thousand, four hundred forty-two", and thus it is an iban number.

Divisors: 1 2 7 14 103 206 721 1442