142138463 has 2 divisors, whose sum is σ = 142138464. Its totient is φ = 142138462.

The previous prime is 142138457. The next prime is 142138471. The reversal of 142138463 is 364831241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142138463 - 2¹² = 142134367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142138433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71069231 + 71069232.

It is an arithmetic number, because the mean of its divisors is an integer number (71069232).

Almost surely, 2^142138463 is an apocalyptic number.

142138463 is a deficient number, since it is larger than the sum of its proper divisors (1).

142138463 is an equidigital number, since it uses as much as digits as its factorization.

142138463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 32.

The square root of 142138463 is about 11922.1836506573. The cubic root of 142138463 is about 521.8798613242.

The spelling of 142138463 in words is "one hundred forty-two million, one hundred thirty-eight thousand, four hundred sixty-three".