142127551 has 2 divisors, whose sum is σ = 142127552. Its totient is φ = 142127550.

The previous prime is 142127549. The next prime is 142127597. The reversal of 142127551 is 155721241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142127551 - 2¹ = 142127549 is a prime.

Together with 142127549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142127851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71063775 + 71063776.

It is an arithmetic number, because the mean of its divisors is an integer number (71063776).

Almost surely, 2^142127551 is an apocalyptic number.

142127551 is a deficient number, since it is larger than the sum of its proper divisors (1).

142127551 is an equidigital number, since it uses as much as digits as its factorization.

142127551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 28.

The square root of 142127551 is about 11921.7260075880. The cubic root of 142127551 is about 521.8665060398.

Adding to 142127551 its reverse (155721241), we get a palindrome (297848792).

The spelling of 142127551 in words is "one hundred forty-two million, one hundred twenty-seven thousand, five hundred fifty-one".