142855477 has 2 divisors, whose sum is σ = 142855478. Its totient is φ = 142855476.

The previous prime is 142855459. The next prime is 142855487. The reversal of 142855477 is 774558241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136749636 + 6105841 = 11694^2 + 2471^2 .

It is a cyclic number.

It is not a de Polignac number, because 142855477 - 2¹¹ = 142853429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142855487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71427738 + 71427739.

It is an arithmetic number, because the mean of its divisors is an integer number (71427739).

Almost surely, 2^142855477 is an apocalyptic number.

It is an amenable number.

142855477 is a deficient number, since it is larger than the sum of its proper divisors (1).

142855477 is an equidigital number, since it uses as much as digits as its factorization.

142855477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 313600, while the sum is 43.

The square root of 142855477 is about 11952.2164053367. The cubic root of 142855477 is about 522.7559266066.

The spelling of 142855477 in words is "one hundred forty-two million, eight hundred fifty-five thousand, four hundred seventy-seven".