142837477 has 2 divisors, whose sum is σ = 142837478. Its totient is φ = 142837476.

The previous prime is 142837391. The next prime is 142837483. The reversal of 142837477 is 774738241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104223681 + 38613796 = 10209^2 + 6214^2 .

It is an emirp because it is prime and its reverse (774738241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142837477 - 2¹⁹ = 142313189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142834477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71418738 + 71418739.

It is an arithmetic number, because the mean of its divisors is an integer number (71418739).

Almost surely, 2^142837477 is an apocalyptic number.

It is an amenable number.

142837477 is a deficient number, since it is larger than the sum of its proper divisors (1).

142837477 is an equidigital number, since it uses as much as digits as its factorization.

142837477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 263424, while the sum is 43.

The square root of 142837477 is about 11951.4633832012. The cubic root of 142837477 is about 522.7339696795.

The spelling of 142837477 in words is "one hundred forty-two million, eight hundred thirty-seven thousand, four hundred seventy-seven".