142244357 has 2 divisors, whose sum is σ = 142244358. Its totient is φ = 142244356.

The previous prime is 142244353. The next prime is 142244359. The reversal of 142244357 is 753442241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140801956 + 1442401 = 11866^2 + 1201^2 .

It is an emirp because it is prime and its reverse (753442241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142244357 - 2² = 142244353 is a prime.

Together with 142244359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142244353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71122178 + 71122179.

It is an arithmetic number, because the mean of its divisors is an integer number (71122179).

Almost surely, 2^142244357 is an apocalyptic number.

It is an amenable number.

142244357 is a deficient number, since it is larger than the sum of its proper divisors (1).

142244357 is an equidigital number, since it uses as much as digits as its factorization.

142244357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 32.

The square root of 142244357 is about 11926.6238726640. The cubic root of 142244357 is about 522.0094303528.

Adding to 142244357 its reverse (753442241), we get a palindrome (895686598).

It can be divided in two parts, 14224 and 4357, that added together give a palindrome (18581).

The spelling of 142244357 in words is "one hundred forty-two million, two hundred forty-four thousand, three hundred fifty-seven".