142138664516 has 6 divisors (see below), whose sum is σ = 248742662910. Its totient is φ = 71069332256.

The previous prime is 142138664483. The next prime is 142138664527. The reversal of 142138664516 is 615466831241.

It can be written as a sum of positive squares in only one way, i.e., 75595302916 + 66543361600 = 274946^2 + 257960^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17767333061 + ... + 17767333068.

It is an arithmetic number, because the mean of its divisors is an integer number (41457110485).

Almost surely, 2^142138664516 is an apocalyptic number.

It is an amenable number.

142138664516 is a deficient number, since it is larger than the sum of its proper divisors (106603998394).

142138664516 is a wasteful number, since it uses less digits than its factorization.

142138664516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35534666133 (or 35534666131 counting only the distinct ones).

The product of its digits is 829440, while the sum is 47.

The spelling of 142138664516 in words is "one hundred forty-two billion, one hundred thirty-eight million, six hundred sixty-four thousand, five hundred sixteen".