1340142 has 16 divisors (see below), whose sum is σ = 2691792. Its totient is φ = 444800.

The previous prime is 1340113. The next prime is 1340149. The reversal of 1340142 is 2410431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340149) 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, 2128 + ... + 2684.

It is an arithmetic number, because the mean of its divisors is an integer number (168237).

2^1340142 is an apocalyptic number.

1340142 is an abundant number, since it is smaller than the sum of its proper divisors (1351650).

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

1340142 is a wasteful number, since it uses less digits than its factorization.

1340142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1340142 is about 1157.6450233124. The cubic root of 1340142 is about 110.2512713178.

Adding to 1340142 its reverse (2410431), we get a palindrome (3750573).

The spelling of 1340142 in words is "one million, three hundred forty thousand, one hundred forty-two".