140157747 has 18 divisors (see below), whose sum is σ = 204098076. Its totient is φ = 92683800.

The previous prime is 140157733. The next prime is 140157757. The reversal of 140157747 is 747751041.

140157747 is a `hidden beast` number, since 1 + 40 + 1 + 577 + 47 = 666.

It is not a de Polignac number, because 140157747 - 2¹¹ = 140155699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140157757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 204868 + ... + 205550.

It is an arithmetic number, because the mean of its divisors is an integer number (11338782).

Almost surely, 2^140157747 is an apocalyptic number.

140157747 is a deficient number, since it is larger than the sum of its proper divisors (63940329).

140157747 is an equidigital number, since it uses as much as digits as its factorization.

140157747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The square root of 140157747 is about 11838.8237169070. The cubic root of 140157747 is about 519.4443608792. Note that the first 3 decimals are identical.

The spelling of 140157747 in words is "one hundred forty million, one hundred fifty-seven thousand, seven hundred forty-seven".