142111031230442 has 4 divisors (see below), whose sum is σ = 213166546845666. Its totient is φ = 71055515615220.

The previous prime is 142111031230361. The next prime is 142111031230459. The reversal of 142111031230442 is 244032130111241.

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., 140561202934201 + 1549828296241 = 11855851^2 + 1244921^2 .

It is a super-2 number, since 2×142111031230442² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35527757807609 + ... + 35527757807612.

Almost surely, 2^{142111031230442} is an apocalyptic number.

142111031230442 is a deficient number, since it is larger than the sum of its proper divisors (71055515615224).

142111031230442 is an equidigital number, since it uses as much as digits as its factorization.

142111031230442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71055515615223.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 142111031230442 its reverse (244032130111241), we get a palindrome (386143161341683).

The spelling of 142111031230442 in words is "one hundred forty-two trillion, one hundred eleven billion, thirty-one million, two hundred thirty thousand, four hundred forty-two".