142031563 has 2 divisors, whose sum is σ = 142031564. Its totient is φ = 142031562.

The previous prime is 142031557. The next prime is 142031579. The reversal of 142031563 is 365130241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142031563 - 2¹⁷ = 141900491 is a prime.

It is not a weakly prime, because it can be changed into another prime (142031543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71015781 + 71015782.

It is an arithmetic number, because the mean of its divisors is an integer number (71015782).

Almost surely, 2^142031563 is an apocalyptic number.

142031563 is a deficient number, since it is larger than the sum of its proper divisors (1).

142031563 is an equidigital number, since it uses as much as digits as its factorization.

142031563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 142031563 is about 11917.6995682892. The cubic root of 142031563 is about 521.7489960917.

The spelling of 142031563 in words is "one hundred forty-two million, thirty-one thousand, five hundred sixty-three".