142442345 has 16 divisors (see below), whose sum is σ = 179260560. Its totient is φ = 108509184.

The previous prime is 142442281. The next prime is 142442347. The reversal of 142442345 is 543244241.

It can be written as a sum of positive squares in 8 ways, for example, as 17606416 + 124835929 = 4196^2 + 11173^2 .

It is not a de Polignac number, because 142442345 - 2⁶ = 142442281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (142442347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3857 + ... + 17313.

It is an arithmetic number, because the mean of its divisors is an integer number (11203785).

Almost surely, 2^142442345 is an apocalyptic number.

It is an amenable number.

142442345 is a deficient number, since it is larger than the sum of its proper divisors (36818215).

142442345 is a wasteful number, since it uses less digits than its factorization.

142442345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13564.

The product of its digits is 15360, while the sum is 29.

The square root of 142442345 is about 11934.9212397904. The cubic root of 142442345 is about 522.2515106974.

Adding to 142442345 its reverse (543244241), we get a palindrome (685686586).

The spelling of 142442345 in words is "one hundred forty-two million, four hundred forty-two thousand, three hundred forty-five".