4278121596 has 180 divisors, whose sum is σ = 13363240968. Its totient is φ = 1189121472.

The previous prime is 4278121591. The next prime is 4278121597. The reversal of 4278121596 is 6951218724.

4278121596 is a `hidden beast` number, since 42 + 7 + 8 + 12 + 1 + 596 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278121591) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 583771 + ... + 591053.

Almost surely, 2^4278121596 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4278121596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6681620484).

4278121596 is an abundant number, since it is smaller than the sum of its proper divisors (9085119372).

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

4278121596 is a wasteful number, since it uses less digits than its factorization.

4278121596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7350 (or 7332 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 4278121596 is about 65407.3512382209. The cubic root of 4278121596 is about 1623.3707183402.

The spelling of 4278121596 in words is "four billion, two hundred seventy-eight million, one hundred twenty-one thousand, five hundred ninety-six".