1340426537 has 8 divisors (see below), whose sum is σ = 1363436352. Its totient is φ = 1317531600.

The previous prime is 1340426513. The next prime is 1340426543. The reversal of 1340426537 is 7356240431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1340426537 - 2⁶ = 1340426473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340426497 and 1340426506.

It is not an unprimeable number, because it can be changed into a prime (1340426137) 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, 5018 + ... + 52019.

It is an arithmetic number, because the mean of its divisors is an integer number (170429544).

Almost surely, 2^1340426537 is an apocalyptic number.

It is an amenable number.

1340426537 is a deficient number, since it is larger than the sum of its proper divisors (23009815).

1340426537 is an equidigital number, since it uses as much as digits as its factorization.

1340426537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57439.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 1340426537 is about 36611.8360233409. The cubic root of 1340426537 is about 1102.5907356211.

Adding to 1340426537 its reverse (7356240431), we get a palindrome (8696666968).

The spelling of 1340426537 in words is "one billion, three hundred forty million, four hundred twenty-six thousand, five hundred thirty-seven".