142487864 has 8 divisors (see below), whose sum is σ = 267164760. Its totient is φ = 71243928.

The previous prime is 142487861. The next prime is 142487867. The reversal of 142487864 is 468784241.

It is an interprime number because it is at equal distance from previous prime (142487861) and next prime (142487867).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142487861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8905484 + ... + 8905499.

It is an arithmetic number, because the mean of its divisors is an integer number (33395595).

Almost surely, 2^142487864 is an apocalyptic number.

It is an amenable number.

142487864 is a deficient number, since it is larger than the sum of its proper divisors (124676896).

142487864 is a wasteful number, since it uses less digits than its factorization.

142487864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17810989 (or 17810985 counting only the distinct ones).

The product of its digits is 344064, while the sum is 44.

The square root of 142487864 is about 11936.8280543870. The cubic root of 142487864 is about 522.3071351555.

The spelling of 142487864 in words is "one hundred forty-two million, four hundred eighty-seven thousand, eight hundred sixty-four".