140420866 has 8 divisors (see below), whose sum is σ = 215112960. Its totient is φ = 68716548.

The previous prime is 140420851. The next prime is 140420869. The reversal of 140420866 is 668024041.

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

It is not an unprimeable number, because it can be changed into a prime (140420869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746826 + ... + 747013.

It is an arithmetic number, because the mean of its divisors is an integer number (26889120).

Almost surely, 2^140420866 is an apocalyptic number.

140420866 is a deficient number, since it is larger than the sum of its proper divisors (74692094).

140420866 is a wasteful number, since it uses less digits than its factorization.

140420866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493888.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 140420866 is about 11849.9310546518. The cubic root of 140420866 is about 519.7692097143.

The spelling of 140420866 in words is "one hundred forty million, four hundred twenty thousand, eight hundred sixty-six".