1340002121 has 8 divisors (see below), whose sum is σ = 1354555200. Its totient is φ = 1325527632.

The previous prime is 1340002093. The next prime is 1340002123. The reversal of 1340002121 is 1212000431.

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 1340002121 - 2¹⁸ = 1339739977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340002096 and 1340002105.

It is not an unprimeable number, because it can be changed into a prime (1340002123) 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, 14966 + ... + 53888.

It is an arithmetic number, because the mean of its divisors is an integer number (169319400).

Almost surely, 2^1340002121 is an apocalyptic number.

It is an amenable number.

1340002121 is a deficient number, since it is larger than the sum of its proper divisors (14553079).

1340002121 is a wasteful number, since it uses less digits than its factorization.

1340002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39295.

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

The square root of 1340002121 is about 36606.0394060871. The cubic root of 1340002121 is about 1102.4743531278.

Adding to 1340002121 its reverse (1212000431), we get a palindrome (2552002552).

The spelling of 1340002121 in words is "one billion, three hundred forty million, two thousand, one hundred twenty-one".