142246665111 has 4 divisors (see below), whose sum is σ = 189662220152. Its totient is φ = 94831110072.

The previous prime is 142246665107. The next prime is 142246665149. The reversal of 142246665111 is 111566642241.

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

It is not a de Polignac number, because 142246665111 - 2² = 142246665107 is a prime.

It is a super-2 number, since 2×142246665111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142246665111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142246665161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23707777516 + ... + 23707777521.

It is an arithmetic number, because the mean of its divisors is an integer number (47415555038).

Almost surely, 2^142246665111 is an apocalyptic number.

142246665111 is a deficient number, since it is larger than the sum of its proper divisors (47415555041).

142246665111 is an equidigital number, since it uses as much as digits as its factorization.

142246665111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47415555040.

The product of its digits is 69120, while the sum is 39.

The spelling of 142246665111 in words is "one hundred forty-two billion, two hundred forty-six million, six hundred sixty-five thousand, one hundred eleven".