1340242422 has 16 divisors (see below), whose sum is σ = 2683979760. Its totient is φ = 446164992.

The previous prime is 1340242411. The next prime is 1340242439. The reversal of 1340242422 is 2242420431.

It is a junction number, because it is equal to n+sod(n) for n = 1340242392 and 1340242401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140623 + ... + 149850.

It is an arithmetic number, because the mean of its divisors is an integer number (167748735).

Almost surely, 2^1340242422 is an apocalyptic number.

1340242422 is an abundant number, since it is smaller than the sum of its proper divisors (1343737338).

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

1340242422 is a wasteful number, since it uses less digits than its factorization.

1340242422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291247.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1340242422 is about 36609.3215178867. The cubic root of 1340242422 is about 1102.5402509973.

Adding to 1340242422 its reverse (2242420431), we get a palindrome (3582662853).

The spelling of 1340242422 in words is "one billion, three hundred forty million, two hundred forty-two thousand, four hundred twenty-two".