140778201 has 8 divisors (see below), whose sum is σ = 197583520. Its totient is φ = 88912512.

The previous prime is 140778181. The next prime is 140778203. The reversal of 140778201 is 102877041.

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

It is not a de Polignac number, because 140778201 - 2¹⁵ = 140745433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140778203) 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, 1234840 + ... + 1234953.

It is an arithmetic number, because the mean of its divisors is an integer number (24697940).

Almost surely, 2^140778201 is an apocalyptic number.

It is an amenable number.

140778201 is a deficient number, since it is larger than the sum of its proper divisors (56805319).

140778201 is a wasteful number, since it uses less digits than its factorization.

140778201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469815.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 140778201 is about 11864.9989886220. The cubic root of 140778201 is about 520.2097292555.

The spelling of 140778201 in words is "one hundred forty million, seven hundred seventy-eight thousand, two hundred one".