142344442 has 4 divisors (see below), whose sum is σ = 213516666. Its totient is φ = 71172220.

The previous prime is 142344427. The next prime is 142344443. The reversal of 142344442 is 244443241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 128572921 + 13771521 = 11339^2 + 3711^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142344442.

It is not an unprimeable number, because it can be changed into a prime (142344443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35586109 + ... + 35586112.

Almost surely, 2^142344442 is an apocalyptic number.

142344442 is a deficient number, since it is larger than the sum of its proper divisors (71172224).

142344442 is an equidigital number, since it uses as much as digits as its factorization.

142344442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71172223.

The product of its digits is 12288, while the sum is 28.

The square root of 142344442 is about 11930.8189995490. The cubic root of 142344442 is about 522.1318325491.

Adding to 142344442 its reverse (244443241), we get a palindrome (386787683).

The spelling of 142344442 in words is "one hundred forty-two million, three hundred forty-four thousand, four hundred forty-two".