1340031142 has 4 divisors (see below), whose sum is σ = 2010046716. Its totient is φ = 670015570.

The previous prime is 1340031139. The next prime is 1340031169. The reversal of 1340031142 is 2411300431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2411300431 = 19 ⋅126910549.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335007784 + ... + 335007787.

It is an arithmetic number, because the mean of its divisors is an integer number (502511679).

Almost surely, 2^1340031142 is an apocalyptic number.

1340031142 is a deficient number, since it is larger than the sum of its proper divisors (670015574).

1340031142 is an equidigital number, since it uses as much as digits as its factorization.

1340031142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670015573.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1340031142 is about 36606.4358002797. The cubic root of 1340031142 is about 1102.4823119901.

Adding to 1340031142 its reverse (2411300431), we get a palindrome (3751331573).

The spelling of 1340031142 in words is "one billion, three hundred forty million, thirty-one thousand, one hundred forty-two".