1356742 has 4 divisors (see below), whose sum is σ = 2035116. Its totient is φ = 678370.

The previous prime is 1356737. The next prime is 1356743. The reversal of 1356742 is 2476531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2476531 = 53 ⋅46727.

It is a d-powerful number, because it can be written as 1 + 3¹² + 5 + 6³ + 7⁷ + 4⁵ + 2⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 1356742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356743) 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 as a sum of consecutive naturals, namely, 339184 + ... + 339187.

It is an arithmetic number, because the mean of its divisors is an integer number (508779).

2^1356742 is an apocalyptic number.

1356742 is a deficient number, since it is larger than the sum of its proper divisors (678374).

1356742 is an equidigital number, since it uses as much as digits as its factorization.

1356742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678373.

The product of its digits is 5040, while the sum is 28.

The square root of 1356742 is about 1164.7926854166. The cubic root of 1356742 is about 110.7046227928.

The spelling of 1356742 in words is "one million, three hundred fifty-six thousand, seven hundred forty-two".