142019137 has 8 divisors (see below), whose sum is σ = 153800640. Its totient is φ = 130360080.

The previous prime is 142019123. The next prime is 142019161. The reversal of 142019137 is 731910241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142019137 is a prime.

It is a super-3 number, since 3×142019137³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142019107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28189 + ... + 32842.

It is an arithmetic number, because the mean of its divisors is an integer number (19225080).

Almost surely, 2^142019137 is an apocalyptic number.

It is an amenable number.

142019137 is a deficient number, since it is larger than the sum of its proper divisors (11781503).

142019137 is a wasteful number, since it uses less digits than its factorization.

142019137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61223.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 142019137 is about 11917.1782314439. The cubic root of 142019137 is about 521.7337801262.

Adding to 142019137 its reverse (731910241), we get a palindrome (873929378).

The spelling of 142019137 in words is "one hundred forty-two million, nineteen thousand, one hundred thirty-seven".