1356129 has 8 divisors (see below), whose sum is σ = 2009120. Its totient is φ = 904068.

The previous prime is 1356109. The next prime is 1356133. The reversal of 1356129 is 9216531.

It is not a de Polignac number, because 1356129 - 2¹¹ = 1354081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 50227 = 1356129 / (1 + 3 + 5 + 6 + 1 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1356109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25087 + ... + 25140.

It is an arithmetic number, because the mean of its divisors is an integer number (251140).

2^1356129 is an apocalyptic number.

It is an amenable number.

1356129 is a deficient number, since it is larger than the sum of its proper divisors (652991).

1356129 is an equidigital number, since it uses as much as digits as its factorization.

1356129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50236 (or 50230 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 1356129 is about 1164.5295187328. The cubic root of 1356129 is about 110.6879475131.

It can be divided in two parts, 1356 and 129, that added together give a triangular number (1485 = T₅₄).

The spelling of 1356129 in words is "one million, three hundred fifty-six thousand, one hundred twenty-nine".