2145420241 has 4 divisors (see below), whose sum is σ = 2153967984. Its totient is φ = 2136872500.

The previous prime is 2145420217. The next prime is 2145420253. The reversal of 2145420241 is 1420245412.

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 a cyclic number.

It is not a de Polignac number, because 2145420241 - 2⁵ = 2145420209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145420341) 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 3 ways as a sum of consecutive naturals, for example, 4273495 + ... + 4273996.

It is an arithmetic number, because the mean of its divisors is an integer number (538491996).

Almost surely, 2^2145420241 is an apocalyptic number.

It is an amenable number.

2145420241 is a deficient number, since it is larger than the sum of its proper divisors (8547743).

2145420241 is an equidigital number, since it uses as much as digits as its factorization.

2145420241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8547742.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2145420241 is about 46318.6813391746. The cubic root of 2145420241 is about 1289.7458067343.

Adding to 2145420241 its reverse (1420245412), we get a palindrome (3565665653).

The spelling of 2145420241 in words is "two billion, one hundred forty-five million, four hundred twenty thousand, two hundred forty-one".