142111477 has 2 divisors, whose sum is σ = 142111478. Its totient is φ = 142111476.

The previous prime is 142111451. The next prime is 142111493. The reversal of 142111477 is 774111241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85951441 + 56160036 = 9271^2 + 7494^2 .

It is a cyclic number.

It is not a de Polignac number, because 142111477 - 2¹⁵ = 142078709 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 (142111427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71055738 + 71055739.

It is an arithmetic number, because the mean of its divisors is an integer number (71055739).

Almost surely, 2^142111477 is an apocalyptic number.

It is an amenable number.

142111477 is a deficient number, since it is larger than the sum of its proper divisors (1).

142111477 is an equidigital number, since it uses as much as digits as its factorization.

142111477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 28.

The square root of 142111477 is about 11921.0518411758. The cubic root of 142111477 is about 521.8468316970.

The spelling of 142111477 in words is "one hundred forty-two million, one hundred eleven thousand, four hundred seventy-seven".