3121420135 has 8 divisors (see below), whose sum is σ = 3749281200. Its totient is φ = 2494751424.

The previous prime is 3121420129. The next prime is 3121420139. The reversal of 3121420135 is 5310241213.

It is a happy number.

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 3121420135 - 2⁷ = 3121420007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121420139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292317 + ... + 302806.

It is an arithmetic number, because the mean of its divisors is an integer number (468660150).

Almost surely, 2^3121420135 is an apocalyptic number.

3121420135 is a deficient number, since it is larger than the sum of its proper divisors (627861065).

3121420135 is a wasteful number, since it uses less digits than its factorization.

3121420135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596177.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 3121420135 is about 55869.6709762998. The cubic root of 3121420135 is about 1461.4503843929.

Adding to 3121420135 its reverse (5310241213), we get a palindrome (8431661348).

The spelling of 3121420135 in words is "three billion, one hundred twenty-one million, four hundred twenty thousand, one hundred thirty-five".