142640325064 has 32 divisors (see below), whose sum is σ = 273427108920. Its totient is φ = 69735617536.

The previous prime is 142640325053. The next prime is 142640325083. The reversal of 142640325064 is 460523046241.

It can be written as a sum of positive squares in 4 ways, for example, as 131872112164 + 10768212900 = 363142^2 + 103770^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449857 + ... + 698320.

Almost surely, 2^142640325064 is an apocalyptic number.

It is an amenable number.

142640325064 is a deficient number, since it is larger than the sum of its proper divisors (130786783856).

142640325064 is a wasteful number, since it uses less digits than its factorization.

142640325064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148529 (or 1148525 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 142640325064 in words is "one hundred forty-two billion, six hundred forty million, three hundred twenty-five thousand, sixty-four".