142420055 has 8 divisors (see below), whose sum is σ = 173706144. Its totient is φ = 112068000.

The previous prime is 142420051. The next prime is 142420079. The reversal of 142420055 is 550024241.

It is a happy number.

142420055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 142420055 - 2² = 142420051 is a prime.

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 142420055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142420051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233171 + ... + 233780.

It is an arithmetic number, because the mean of its divisors is an integer number (21713268).

Almost surely, 2^142420055 is an apocalyptic number.

142420055 is a deficient number, since it is larger than the sum of its proper divisors (31286089).

142420055 is an equidigital number, since it uses as much as digits as its factorization.

142420055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467017.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 142420055 is about 11933.9873889660. The cubic root of 142420055 is about 522.2242678776.

Adding to 142420055 its reverse (550024241), we get a palindrome (692444296).

The spelling of 142420055 in words is "one hundred forty-two million, four hundred twenty thousand, fifty-five".