140666542 has 8 divisors (see below), whose sum is σ = 211075056. Its totient is φ = 70308192.

The previous prime is 140666521. The next prime is 140666543. The reversal of 140666542 is 245666041.

140666542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 140666498 and 140666507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140666543) 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 in 3 ways as a sum of consecutive naturals, for example, 4498 + ... + 17365.

It is an arithmetic number, because the mean of its divisors is an integer number (26384382).

Almost surely, 2^140666542 is an apocalyptic number.

140666542 is a deficient number, since it is larger than the sum of its proper divisors (70408514).

140666542 is a wasteful number, since it uses less digits than its factorization.

140666542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25082.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 140666542 is about 11860.2926608073. The cubic root of 140666542 is about 520.0721571465.

The spelling of 140666542 in words is "one hundred forty million, six hundred sixty-six thousand, five hundred forty-two".