4221605142 has 40 divisors (see below), whose sum is σ = 9660806496. Its totient is φ = 1377258768.

The previous prime is 4221605093. The next prime is 4221605147. The reversal of 4221605142 is 2415061224.

4221605142 is a `hidden beast` number, since 42 + 2 + 1 + 605 + 14 + 2 = 666.

4221605142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221605147) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 269613 + ... + 284840.

Almost surely, 2^4221605142 is an apocalyptic number.

4221605142 is an abundant number, since it is smaller than the sum of its proper divisors (5439201354).

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

4221605142 is a wasteful number, since it uses less digits than its factorization.

4221605142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554514 (or 554505 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 4221605142 is about 64973.8804597663. The cubic root of 4221605142 is about 1616.1904518842.

Adding to 4221605142 its reverse (2415061224), we get a palindrome (6636666366).

The spelling of 4221605142 in words is "four billion, two hundred twenty-one million, six hundred five thousand, one hundred forty-two".