140257206 has 48 divisors (see below), whose sum is σ = 315888768. Its totient is φ = 44928000.

The previous prime is 140257129. The next prime is 140257211. The reversal of 140257206 is 602752041.

140257206 is a `hidden beast` number, since 1 + 402 + 57 + 206 = 666.

140257206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 140257206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86806 + ... + 88406.

It is an arithmetic number, because the mean of its divisors is an integer number (6581016).

Almost surely, 2^140257206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140257206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157944384).

140257206 is an abundant number, since it is smaller than the sum of its proper divisors (175631562).

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

140257206 is a wasteful number, since it uses less digits than its factorization.

140257206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 140257206 is about 11843.0235159777. The cubic root of 140257206 is about 519.5672015168.

The spelling of 140257206 in words is "one hundred forty million, two hundred fifty-seven thousand, two hundred six".