2145243441 has 8 divisors (see below), whose sum is σ = 3120354144. Its totient is φ = 1300147520.

The previous prime is 2145243433. The next prime is 2145243449. The reversal of 2145243441 is 1443425412.

It is an interprime number because it is at equal distance from previous prime (2145243433) and next prime (2145243449).

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 2145243441 - 2³ = 2145243433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145243399 and 2145243408.

It is not an unprimeable number, because it can be changed into a prime (2145243449) 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, 32503656 + ... + 32503721.

It is an arithmetic number, because the mean of its divisors is an integer number (390044268).

Almost surely, 2^2145243441 is an apocalyptic number.

It is an amenable number.

2145243441 is a deficient number, since it is larger than the sum of its proper divisors (975110703).

2145243441 is a wasteful number, since it uses less digits than its factorization.

2145243441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65007391.

The product of its digits is 15360, while the sum is 30.

The square root of 2145243441 is about 46316.7727826540. The cubic root of 2145243441 is about 1289.7103772617.

Adding to 2145243441 its reverse (1443425412), we get a palindrome (3588668853).

The spelling of 2145243441 in words is "two billion, one hundred forty-five million, two hundred forty-three thousand, four hundred forty-one".