1405259 has 4 divisors (see below), whose sum is σ = 1479240. Its totient is φ = 1331280.

The previous prime is 1405249. The next prime is 1405267. The reversal of 1405259 is 9525041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1405259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1405249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36962 + ... + 36999.

It is an arithmetic number, because the mean of its divisors is an integer number (369810).

2^1405259 is an apocalyptic number.

1405259 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1405259 is a deficient number, since it is larger than the sum of its proper divisors (73981).

1405259 is an equidigital number, since it uses as much as digits as its factorization.

1405259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73980.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1405259 is about 1185.4362066345. The cubic root of 1405259 is about 112.0087950151.

The spelling of 1405259 in words is "one million, four hundred five thousand, two hundred fifty-nine".