1340042422 has 16 divisors (see below), whose sum is σ = 2106178272. Its totient is φ = 638225280.

The previous prime is 1340042383. The next prime is 1340042423. The reversal of 1340042422 is 2242400431.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1340042393 and 1340042402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340042423) 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, 49353 + ... + 71524.

It is an arithmetic number, because the mean of its divisors is an integer number (131636142).

Almost surely, 2^1340042422 is an apocalyptic number.

1340042422 is a deficient number, since it is larger than the sum of its proper divisors (766135850).

1340042422 is a wasteful number, since it uses less digits than its factorization.

1340042422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121143.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1340042422 is about 36606.5898712240. The cubic root of 1340042422 is about 1102.4854054420.

Adding to 1340042422 its reverse (2242400431), we get a palindrome (3582442853).

The spelling of 1340042422 in words is "one billion, three hundred forty million, forty-two thousand, four hundred twenty-two".