1340742426 has 16 divisors (see below), whose sum is σ = 2682971328. Its totient is φ = 446666400.

The previous prime is 1340742371. The next prime is 1340742433. The reversal of 1340742426 is 6242470431.

It is a Curzon 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 in 7 ways as a sum of consecutive naturals, for example, 50035 + ... + 72006.

It is an arithmetic number, because the mean of its divisors is an integer number (167685708).

Almost surely, 2^1340742426 is an apocalyptic number.

1340742426 is an abundant number, since it is smaller than the sum of its proper divisors (1342228902).

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

1340742426 is a wasteful number, since it uses less digits than its factorization.

1340742426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123877.

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 1340742426 is about 36616.1497975961. The cubic root of 1340742426 is about 1102.6773421151.

The spelling of 1340742426 in words is "one billion, three hundred forty million, seven hundred forty-two thousand, four hundred twenty-six".