Search a number
1429 is a prime number

1429 has 2 divisors, whose sum is σ = 1430. Its totient is φ = 1428.

The previous prime is 1427. The next prime is 1433. The reversal of 1429 is 9241.

1429 is nontrivially palindromic in base 3 and base 16.

1429 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900 + 529 = 30^2 + 23^2 .

It is an emirp because it is prime and its reverse (9241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1429 - 21 = 1427 is a prime.

Together with 1427, it forms a pair of twin primes.

1429 is an undulating number in base 16.

It is a nialpdrome in base 7, base 14 and base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714 + 715.

It is an arithmetic number, because the mean of its divisors is an integer number (715).

21429 is an apocalyptic number.

It is an amenable number.

1429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1429 is an equidigital number, since it uses as much as digits as its factorization.

1429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 16.

The square root of 1429 is about 37.8021163429. The cubic root of 1429 is about 11.2636049397.

It can be divided in two parts, 142 and 9, that added together give a palindrome (151).

The spelling of 1429 in words is "one thousand, four hundred twenty-nine".