142221004 has 18 divisors (see below), whose sum is σ = 262678164. Its totient is φ = 67367160.

The previous prime is 142220999. The next prime is 142221019. The reversal of 142221004 is 400122241.

142221004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×142221004³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47802 + ... + 50689.

Almost surely, 2^142221004 is an apocalyptic number.

It is an amenable number.

142221004 is a deficient number, since it is larger than the sum of its proper divisors (120457160).

142221004 is a wasteful number, since it uses less digits than its factorization.

142221004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98533 (or 98512 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 142221004 is about 11925.6448043701. The cubic root of 142221004 is about 521.9808617832.

Adding to 142221004 its reverse (400122241), we get a palindrome (542343245).

The spelling of 142221004 in words is "one hundred forty-two million, two hundred twenty-one thousand, four".