4212781943 has 4 divisors (see below), whose sum is σ = 4230262608. Its totient is φ = 4195301280.

The previous prime is 4212781933. The next prime is 4212781987. The reversal of 4212781943 is 3491872124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4212781943 - 2⁸ = 4212781687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4212781943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4212781933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8739971 + ... + 8740452.

It is an arithmetic number, because the mean of its divisors is an integer number (1057565652).

Almost surely, 2^4212781943 is an apocalyptic number.

4212781943 is a deficient number, since it is larger than the sum of its proper divisors (17480665).

4212781943 is a wasteful number, since it uses less digits than its factorization.

4212781943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17480664.

The product of its digits is 96768, while the sum is 41.

The square root of 4212781943 is about 64905.9469001108. The cubic root of 4212781943 is about 1615.0637148931.

The spelling of 4212781943 in words is "four billion, two hundred twelve million, seven hundred eighty-one thousand, nine hundred forty-three".