1342391 has 4 divisors (see below), whose sum is σ = 1355784. Its totient is φ = 1329000.

The previous prime is 1342379. The next prime is 1342403. The reversal of 1342391 is 1932431.

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

It is an interprime number because it is at equal distance from previous prime (1342379) and next prime (1342403).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1342391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342361) 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, 6545 + ... + 6746.

It is an arithmetic number, because the mean of its divisors is an integer number (338946).

2^1342391 is an apocalyptic number.

1342391 is a deficient number, since it is larger than the sum of its proper divisors (13393).

1342391 is a wasteful number, since it uses less digits than its factorization.

1342391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13392.

The product of its digits is 648, while the sum is 23.

The square root of 1342391 is about 1158.6159846990. The cubic root of 1342391 is about 110.3129106898.

The spelling of 1342391 in words is "one million, three hundred forty-two thousand, three hundred ninety-one".