4221265854 has 64 divisors (see below), whose sum is σ = 9501617664. Its totient is φ = 1240500096.

The previous prime is 4221265843. The next prime is 4221265859. The reversal of 4221265854 is 4585621224.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221265859) 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 31 ways as a sum of consecutive naturals, for example, 1571997 + ... + 1574679.

It is an arithmetic number, because the mean of its divisors is an integer number (148462776).

Almost surely, 2^4221265854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221265854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4750808832).

4221265854 is an abundant number, since it is smaller than the sum of its proper divisors (5280351810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4221265854 is a wasteful number, since it uses less digits than its factorization.

4221265854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601.

The product of its digits is 153600, while the sum is 39.

The square root of 4221265854 is about 64971.2694504271. The cubic root of 4221265854 is about 1616.1471532889.

The spelling of 4221265854 in words is "four billion, two hundred twenty-one million, two hundred sixty-five thousand, eight hundred fifty-four".