145142 has 8 divisors (see below), whose sum is σ = 224832. Its totient is φ = 70200.

The previous prime is 145139. The next prime is 145177. The reversal of 145142 is 241541.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 145142.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145142.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1109 + ... + 1232.

It is an arithmetic number, because the mean of its divisors is an integer number (28104).

2¹⁴⁵¹⁴² is an apocalyptic number.

145142 is a deficient number, since it is larger than the sum of its proper divisors (79690).

145142 is a wasteful number, since it uses less digits than its factorization.

145142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374.

The product of its digits is 160, while the sum is 17.

The square root of 145142 is about 380.9750648008. The cubic root of 145142 is about 52.5530227729.

Adding to 145142 its reverse (241541), we get a palindrome (386683).

The spelling of 145142 in words is "one hundred forty-five thousand, one hundred forty-two".