140666742 has 12 divisors (see below), whose sum is σ = 304777980. Its totient is φ = 46888908.

The previous prime is 140666741. The next prime is 140666753. The reversal of 140666742 is 247666041.

140666742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 140666697 and 140666706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140666741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3907392 + ... + 3907427.

It is an arithmetic number, because the mean of its divisors is an integer number (25398165).

Almost surely, 2^140666742 is an apocalyptic number.

140666742 is an abundant number, since it is smaller than the sum of its proper divisors (164111238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140666742 is a wasteful number, since it uses less digits than its factorization.

140666742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814827 (or 7814824 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 140666742 is about 11860.3010922995. The cubic root of 140666742 is about 520.0724036263.

The spelling of 140666742 in words is "one hundred forty million, six hundred sixty-six thousand, seven hundred forty-two".