142242424121 has 4 divisors (see below), whose sum is σ = 162562770432. Its totient is φ = 121922077812.

The previous prime is 142242424091. The next prime is 142242424141. The reversal of 142242424121 is 121424242241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142242424121 - 2²² = 142238229817 is a prime.

It is a super-3 number, since 3×142242424121³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142242424141) 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, 10160173145 + ... + 10160173158.

It is an arithmetic number, because the mean of its divisors is an integer number (40640692608).

Almost surely, 2^142242424121 is an apocalyptic number.

It is an amenable number.

142242424121 is a deficient number, since it is larger than the sum of its proper divisors (20320346311).

142242424121 is an equidigital number, since it uses as much as digits as its factorization.

142242424121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20320346310.

The product of its digits is 8192, while the sum is 29.

Adding to 142242424121 its reverse (121424242241), we get a palindrome (263666666362).

The spelling of 142242424121 in words is "one hundred forty-two billion, two hundred forty-two million, four hundred twenty-four thousand, one hundred twenty-one".