2145242041 has 4 divisors (see below), whose sum is σ = 2148498000. Its totient is φ = 2141986084.

The previous prime is 2145242023. The next prime is 2145242081. The reversal of 2145242041 is 1402425412.

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 2145242041 - 2²¹ = 2143144889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145241997 and 2145242015.

It is not an unprimeable number, because it can be changed into a prime (2145242081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1626991 + ... + 1628308.

It is an arithmetic number, because the mean of its divisors is an integer number (537124500).

Almost surely, 2^2145242041 is an apocalyptic number.

It is an amenable number.

2145242041 is a deficient number, since it is larger than the sum of its proper divisors (3255959).

2145242041 is an equidigital number, since it uses as much as digits as its factorization.

2145242041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255958.

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

The square root of 2145242041 is about 46316.7576693361. The cubic root of 2145242041 is about 1289.7100967038.

Adding to 2145242041 its reverse (1402425412), we get a palindrome (3547667453).

The spelling of 2145242041 in words is "two billion, one hundred forty-five million, two hundred forty-two thousand, forty-one".