142420134 has 8 divisors (see below), whose sum is σ = 284840280. Its totient is φ = 47473376.

The previous prime is 142420123. The next prime is 142420193. The reversal of 142420134 is 431024241.

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

142420134 is an admirable number.

It is a super-3 number, since 3×142420134³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142420134.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11868339 + ... + 11868350.

It is an arithmetic number, because the mean of its divisors is an integer number (35605035).

Almost surely, 2^142420134 is an apocalyptic number.

142420134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142420134 is a wasteful number, since it uses less digits than its factorization.

142420134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23736694.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 142420134 is about 11933.9906988400. The cubic root of 142420134 is about 522.2243644363.

Adding to 142420134 its reverse (431024241), we get a palindrome (573444375).

The spelling of 142420134 in words is "one hundred forty-two million, four hundred twenty thousand, one hundred thirty-four".