140406501 has 8 divisors (see below), whose sum is σ = 188683264. Its totient is φ = 92867040.

The previous prime is 140406491. The next prime is 140406503. The reversal of 140406501 is 105604041.

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

It is a de Polignac number, because none of the positive numbers 2^k-140406501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140406503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183880 + ... + 184641.

It is an arithmetic number, because the mean of its divisors is an integer number (23585408).

Almost surely, 2^140406501 is an apocalyptic number.

It is an amenable number.

140406501 is a deficient number, since it is larger than the sum of its proper divisors (48276763).

140406501 is a wasteful number, since it uses less digits than its factorization.

140406501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368651.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 140406501 is about 11849.3249174795. The cubic root of 140406501 is about 519.7514850471.

The spelling of 140406501 in words is "one hundred forty million, four hundred six thousand, five hundred one".