1340402125 has 8 divisors (see below), whose sum is σ = 1672822008. Its totient is φ = 1072321600.

The previous prime is 1340402093. The next prime is 1340402143. The reversal of 1340402125 is 5212040431.

It can be written as a sum of positive squares in 4 ways, for example, as 91910569 + 1248491556 = 9587^2 + 35334^2 .

It is not a de Polignac number, because 1340402125 - 2⁵ = 1340402093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340402096 and 1340402105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5361484 + ... + 5361733.

It is an arithmetic number, because the mean of its divisors is an integer number (209102751).

Almost surely, 2^1340402125 is an apocalyptic number.

It is an amenable number.

1340402125 is a deficient number, since it is larger than the sum of its proper divisors (332419883).

1340402125 is an equidigital number, since it uses as much as digits as its factorization.

1340402125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10723232 (or 10723222 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1340402125 is about 36611.5026323695. The cubic root of 1340402125 is about 1102.5840420780.

Adding to 1340402125 its reverse (5212040431), we get a palindrome (6552442556).

The spelling of 1340402125 in words is "one billion, three hundred forty million, four hundred two thousand, one hundred twenty-five".