4145421243 has 8 divisors (see below), whose sum is σ = 5620910400. Its totient is φ = 2716773128.

The previous prime is 4145421227. The next prime is 4145421283. The reversal of 4145421243 is 3421245414.

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 4145421243 - 2⁴ = 4145421227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4145421243.

It is not an unprimeable number, because it can be changed into a prime (4145421223) 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, 11710053 + ... + 11710406.

It is an arithmetic number, because the mean of its divisors is an integer number (702613800).

Almost surely, 2^4145421243 is an apocalyptic number.

4145421243 is a deficient number, since it is larger than the sum of its proper divisors (1475489157).

4145421243 is a wasteful number, since it uses less digits than its factorization.

4145421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23420521.

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

The square root of 4145421243 is about 64384.9457792736. The cubic root of 4145421243 is about 1606.4093485561.

Adding to 4145421243 its reverse (3421245414), we get a palindrome (7566666657).

The spelling of 4145421243 in words is "four billion, one hundred forty-five million, four hundred twenty-one thousand, two hundred forty-three".