142226551 has 2 divisors, whose sum is σ = 142226552. Its totient is φ = 142226550.

The previous prime is 142226519. The next prime is 142226597. The reversal of 142226551 is 155622241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142226551 - 2⁵ = 142226519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142227551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71113275 + 71113276.

It is an arithmetic number, because the mean of its divisors is an integer number (71113276).

Almost surely, 2^142226551 is an apocalyptic number.

142226551 is a deficient number, since it is larger than the sum of its proper divisors (1).

142226551 is an equidigital number, since it uses as much as digits as its factorization.

142226551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 28.

The square root of 142226551 is about 11925.8773681436. The cubic root of 142226551 is about 521.9876479121.

Adding to 142226551 its reverse (155622241), we get a palindrome (297848792).

The spelling of 142226551 in words is "one hundred forty-two million, two hundred twenty-six thousand, five hundred fifty-one".