142442013 has 16 divisors (see below), whose sum is σ = 226492416. Its totient is φ = 77856240.

The previous prime is 142441973. The next prime is 142442023. The reversal of 142442013 is 310244241.

It is not a de Polignac number, because 142442013 - 2¹⁰ = 142440989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142442023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146973 + ... + 147938.

It is an arithmetic number, because the mean of its divisors is an integer number (14155776).

Almost surely, 2^142442013 is an apocalyptic number.

It is an amenable number.

142442013 is a deficient number, since it is larger than the sum of its proper divisors (84050403).

142442013 is a wasteful number, since it uses less digits than its factorization.

142442013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294944.

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

The square root of 142442013 is about 11934.9073310185. The cubic root of 142442013 is about 522.2511049482.

Adding to 142442013 its reverse (310244241), we get a palindrome (452686254).

The spelling of 142442013 in words is "one hundred forty-two million, four hundred forty-two thousand, thirteen".