142232021440402 has 4 divisors (see below), whose sum is σ = 213348032160606. Its totient is φ = 71116010720200.

The previous prime is 142232021440363. The next prime is 142232021440403. The reversal of 142232021440402 is 204044120232241.

142232021440402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 103695749638321 + 38536271802081 = 10183111^2 + 6207759^2 .

It is a super-3 number, since 3×142232021440402³ (a number of 43 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (142232021440403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35558005360099 + ... + 35558005360102.

Almost surely, 2^{142232021440402} is an apocalyptic number.

142232021440402 is a deficient number, since it is larger than the sum of its proper divisors (71116010720204).

142232021440402 is an equidigital number, since it uses as much as digits as its factorization.

142232021440402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71116010720203.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 142232021440402 its reverse (204044120232241), we get a palindrome (346276141672643).

The spelling of 142232021440402 in words is "one hundred forty-two trillion, two hundred thirty-two billion, twenty-one million, four hundred forty thousand, four hundred two".