142557487 has 2 divisors, whose sum is σ = 142557488. Its totient is φ = 142557486.

The previous prime is 142557449. The next prime is 142557497. The reversal of 142557487 is 784755241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142557487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142557407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71278743 + 71278744.

It is an arithmetic number, because the mean of its divisors is an integer number (71278744).

Almost surely, 2^142557487 is an apocalyptic number.

142557487 is a deficient number, since it is larger than the sum of its proper divisors (1).

142557487 is an equidigital number, since it uses as much as digits as its factorization.

142557487 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 142557487 is about 11939.7440089811. The cubic root of 142557487 is about 522.3921919161.

The spelling of 142557487 in words is "one hundred forty-two million, five hundred fifty-seven thousand, four hundred eighty-seven".