4278241781 has 8 divisors (see below), whose sum is σ = 4667652864. Its totient is φ = 3888910720.

The previous prime is 4278241757. The next prime is 4278241783. The reversal of 4278241781 is 1871428724.

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 4278241781 - 2³⁰ = 3204499957 is a prime.

It is a super-2 number, since 2×4278241781² = 36606705473388103922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278241783) 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, 171740 + ... + 195066.

It is an arithmetic number, because the mean of its divisors is an integer number (583456608).

Almost surely, 2^4278241781 is an apocalyptic number.

It is an amenable number.

4278241781 is a deficient number, since it is larger than the sum of its proper divisors (389411083).

4278241781 is a wasteful number, since it uses less digits than its factorization.

4278241781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40011.

The product of its digits is 200704, while the sum is 44.

The square root of 4278241781 is about 65408.2699740637. The cubic root of 4278241781 is about 1623.3859199482.

The spelling of 4278241781 in words is "four billion, two hundred seventy-eight million, two hundred forty-one thousand, seven hundred eighty-one".