1342729 has 4 divisors (see below), whose sum is σ = 1389060. Its totient is φ = 1296400.

The previous prime is 1342727. The next prime is 1342739. The reversal of 1342729 is 9272431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 559504 + 783225 = 748^2 + 885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1342729 - 2¹ = 1342727 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1342697 and 1342706.

It is not an unprimeable number, because it can be changed into a prime (1342723) 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, 23122 + ... + 23179.

It is an arithmetic number, because the mean of its divisors is an integer number (347265).

2^1342729 is an apocalyptic number.

It is an amenable number.

1342729 is a deficient number, since it is larger than the sum of its proper divisors (46331).

1342729 is an equidigital number, since it uses as much as digits as its factorization.

1342729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46330.

The product of its digits is 3024, while the sum is 28.

The square root of 1342729 is about 1158.7618392060. The cubic root of 1342729 is about 110.3221684582.

It can be divided in two parts, 13427 and 29, that added together give a square (13456 = 116²).

The spelling of 1342729 in words is "one million, three hundred forty-two thousand, seven hundred twenty-nine".