1340201039 has 4 divisors (see below), whose sum is σ = 1341036624. Its totient is φ = 1339365456.

The previous prime is 1340200999. The next prime is 1340201059. The reversal of 1340201039 is 9301020431.

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

It is a cyclic number.

It is not a de Polignac number, because 1340201039 - 2²⁴ = 1323423823 is a prime.

It is a super-2 number, since 2×1340201039² = 3592277649873359042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340201059) 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, 415382 + ... + 418595.

It is an arithmetic number, because the mean of its divisors is an integer number (335259156).

Almost surely, 2^1340201039 is an apocalyptic number.

1340201039 is a deficient number, since it is larger than the sum of its proper divisors (835585).

1340201039 is an equidigital number, since it uses as much as digits as its factorization.

1340201039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835584.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1340201039 is about 36608.7563159417. The cubic root of 1340201039 is about 1102.5289030769.

The spelling of 1340201039 in words is "one billion, three hundred forty million, two hundred one thousand, thirty-nine".