142144451 has 4 divisors (see below), whose sum is σ = 142734504. Its totient is φ = 141554400.

The previous prime is 142144447. The next prime is 142144459. The reversal of 142144451 is 154441241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154441241 = 4373 ⋅35317.

It is a cyclic number.

It is not a de Polignac number, because 142144451 - 2² = 142144447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142144451.

It is not an unprimeable number, because it can be changed into a prime (142144459) 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, 294665 + ... + 295146.

It is an arithmetic number, because the mean of its divisors is an integer number (35683626).

Almost surely, 2^142144451 is an apocalyptic number.

142144451 is a deficient number, since it is larger than the sum of its proper divisors (590053).

142144451 is an equidigital number, since it uses as much as digits as its factorization.

142144451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590052.

The product of its digits is 2560, while the sum is 26.

The square root of 142144451 is about 11922.4347765043. The cubic root of 142144451 is about 521.8871897950.

Adding to 142144451 its reverse (154441241), we get a palindrome (296585692).

The spelling of 142144451 in words is "one hundred forty-two million, one hundred forty-four thousand, four hundred fifty-one".