142330451 has 2 divisors, whose sum is σ = 142330452. Its totient is φ = 142330450.

The previous prime is 142330439. The next prime is 142330499. The reversal of 142330451 is 154033241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142330451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142330411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71165225 + 71165226.

It is an arithmetic number, because the mean of its divisors is an integer number (71165226).

Almost surely, 2^142330451 is an apocalyptic number.

142330451 is a deficient number, since it is larger than the sum of its proper divisors (1).

142330451 is an equidigital number, since it uses as much as digits as its factorization.

142330451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 142330451 is about 11930.2326465162. The cubic root of 142330451 is about 522.1147252523.

Adding to 142330451 its reverse (154033241), we get a palindrome (296363692).

The spelling of 142330451 in words is "one hundred forty-two million, three hundred thirty thousand, four hundred fifty-one".