1340088137 has 4 divisors (see below), whose sum is σ = 1340275860. Its totient is φ = 1339900416.

The previous prime is 1340088103. The next prime is 1340088179. The reversal of 1340088137 is 7318800431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 581581456 + 758506681 = 24116^2 + 27541^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340088137 - 2¹⁰ = 1340087113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340088097 and 1340088106.

It is not an unprimeable number, because it can be changed into a prime (1340288137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82712 + ... + 97577.

It is an arithmetic number, because the mean of its divisors is an integer number (335068965).

Almost surely, 2^1340088137 is an apocalyptic number.

It is an amenable number.

1340088137 is a deficient number, since it is larger than the sum of its proper divisors (187723).

1340088137 is an equidigital number, since it uses as much as digits as its factorization.

1340088137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187722.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 1340088137 is about 36607.2142753310. The cubic root of 1340088137 is about 1102.4979422459.

Adding to 1340088137 its reverse (7318800431), we get a palindrome (8658888568).

The spelling of 1340088137 in words is "one billion, three hundred forty million, eighty-eight thousand, one hundred thirty-seven".