1340100401 has 4 divisors (see below), whose sum is σ = 1341151092. Its totient is φ = 1339049712.

The previous prime is 1340100397. The next prime is 1340100409. The reversal of 1340100401 is 1040010431.

It is a happy number.

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 440160400 + 899940001 = 20980^2 + 29999^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340100401 - 2² = 1340100397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340100409) 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, 523430 + ... + 525983.

It is an arithmetic number, because the mean of its divisors is an integer number (335287773).

Almost surely, 2^1340100401 is an apocalyptic number.

It is an amenable number.

1340100401 is a deficient number, since it is larger than the sum of its proper divisors (1050691).

1340100401 is a wasteful number, since it uses less digits than its factorization.

1340100401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050690.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1340100401 is about 36607.3817829137. The cubic root of 1340100401 is about 1102.5013054559.

Adding to 1340100401 its reverse (1040010431), we get a palindrome (2380110832).

The spelling of 1340100401 in words is "one billion, three hundred forty million, one hundred thousand, four hundred one".