1310742 has 56 divisors (see below), whose sum is σ = 3147840. Its totient is φ = 408240.

The previous prime is 1310741. The next prime is 1310759. The reversal of 1310742 is 2470131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 42267 + ... + 42297.

2^1310742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1310742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1573920).

1310742 is an abundant number, since it is smaller than the sum of its proper divisors (1837098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1310742 is an equidigital number, since it uses as much as digits as its factorization.

1310742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1310742 is about 1144.8764125442. The cubic root of 1310742 is about 109.4390728800.

Adding to 1310742 its reverse (2470131), we get a palindrome (3780873).

The spelling of 1310742 in words is "one million, three hundred ten thousand, seven hundred forty-two".