142221605654 has 8 divisors (see below), whose sum is σ = 224560430040. Its totient is φ = 67368128976.

The previous prime is 142221605653. The next prime is 142221605759. The reversal of 142221605654 is 456506122241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×142221605654² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 3742673833 = 142221605654 / (1 + 4 + 2 + 2 + 2 + 1 + 6 + 0 + 5 + 6 + 5 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142221605653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871336879 + ... + 1871336954.

It is an arithmetic number, because the mean of its divisors is an integer number (28070053755).

Almost surely, 2^142221605654 is an apocalyptic number.

142221605654 is a deficient number, since it is larger than the sum of its proper divisors (82338824386).

142221605654 is a wasteful number, since it uses less digits than its factorization.

142221605654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742673854.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 142221605654 its reverse (456506122241), we get a palindrome (598727727895).

The spelling of 142221605654 in words is "one hundred forty-two billion, two hundred twenty-one million, six hundred five thousand, six hundred fifty-four".