142243351 has 4 divisors (see below), whose sum is σ = 142380000. Its totient is φ = 142106704.

The previous prime is 142243349. The next prime is 142243363. The reversal of 142243351 is 153342241.

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

It is a cyclic number.

It is not a de Polignac number, because 142243351 - 2¹ = 142243349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142243051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66751 + ... + 68848.

It is an arithmetic number, because the mean of its divisors is an integer number (35595000).

Almost surely, 2^142243351 is an apocalyptic number.

142243351 is a deficient number, since it is larger than the sum of its proper divisors (136649).

142243351 is a wasteful number, since it uses less digits than its factorization.

142243351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136648.

The product of its digits is 2880, while the sum is 25.

The square root of 142243351 is about 11926.5816980390. The cubic root of 142243351 is about 522.0081997410.

Adding to 142243351 its reverse (153342241), we get a palindrome (295585592).

The spelling of 142243351 in words is "one hundred forty-two million, two hundred forty-three thousand, three hundred fifty-one".