140211657 has 24 divisors (see below), whose sum is σ = 213542784. Its totient is φ = 88475904.

The previous prime is 140211647. The next prime is 140211661. The reversal of 140211657 is 756112041.

It is a happy number.

140211657 is a `hidden beast` number, since 1 + 4 + 0 + 2 + 1 + 1 + 657 = 666.

It is not a de Polignac number, because 140211657 - 2¹⁴ = 140195273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140211657.

It is not an unprimeable number, because it can be changed into a prime (140211647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16588 + ... + 23570.

It is an arithmetic number, because the mean of its divisors is an integer number (8897616).

Almost surely, 2^140211657 is an apocalyptic number.

It is an amenable number.

140211657 is a deficient number, since it is larger than the sum of its proper divisors (73331127).

140211657 is a wasteful number, since it uses less digits than its factorization.

140211657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7109 (or 7106 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 140211657 is about 11841.1003289390. The cubic root of 140211657 is about 519.5109516944.

Adding to 140211657 its reverse (756112041), we get a palindrome (896323698).

The spelling of 140211657 in words is "one hundred forty million, two hundred eleven thousand, six hundred fifty-seven".