140666404 has 12 divisors (see below), whose sum is σ = 246458800. Its totient is φ = 70249608.

The previous prime is 140666387. The next prime is 140666423. The reversal of 140666404 is 404666041.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17034 + ... + 23905.

Almost surely, 2^140666404 is an apocalyptic number.

It is an amenable number.

140666404 is a deficient number, since it is larger than the sum of its proper divisors (105792396).

140666404 is a wasteful number, since it uses less digits than its factorization.

140666404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41802 (or 41800 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 140666404 is about 11860.2868430742. The cubic root of 140666404 is about 520.0719870753.

The spelling of 140666404 in words is "one hundred forty million, six hundred sixty-six thousand, four hundred four".