2151242013 has 4 divisors (see below), whose sum is σ = 2868322688. Its totient is φ = 1434161340.

The previous prime is 2151241991. The next prime is 2151242077. The reversal of 2151242013 is 3102421512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2151242013 - 2⁶ = 2151241949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151242083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358540333 + ... + 358540338.

It is an arithmetic number, because the mean of its divisors is an integer number (717080672).

Almost surely, 2^2151242013 is an apocalyptic number.

It is an amenable number.

2151242013 is a deficient number, since it is larger than the sum of its proper divisors (717080675).

2151242013 is an equidigital number, since it uses as much as digits as its factorization.

2151242013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717080674.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2151242013 is about 46381.4835144371. The cubic root of 2151242013 is about 1290.9113630768.

Adding to 2151242013 its reverse (3102421512), we get a palindrome (5253663525).

The spelling of 2151242013 in words is "two billion, one hundred fifty-one million, two hundred forty-two thousand, thirteen".