142538477 has 2 divisors, whose sum is σ = 142538478. Its totient is φ = 142538476.

The previous prime is 142538441. The next prime is 142538491. The reversal of 142538477 is 774835241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132112036 + 10426441 = 11494^2 + 3229^2 .

It is a cyclic number.

It is not a de Polignac number, because 142538477 - 2¹⁰ = 142537453 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142538177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71269238 + 71269239.

It is an arithmetic number, because the mean of its divisors is an integer number (71269239).

Almost surely, 2^142538477 is an apocalyptic number.

It is an amenable number.

142538477 is a deficient number, since it is larger than the sum of its proper divisors (1).

142538477 is an equidigital number, since it uses as much as digits as its factorization.

142538477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 41.

The square root of 142538477 is about 11938.9479017207. The cubic root of 142538477 is about 522.3689706009.

The spelling of 142538477 in words is "one hundred forty-two million, five hundred thirty-eight thousand, four hundred seventy-seven".