140124645 has 12 divisors (see below), whose sum is σ = 242882796. Its totient is φ = 74733120.

The previous prime is 140124641. The next prime is 140124653. The reversal of 140124645 is 546421041.

140124645 is a `hidden beast` number, since 1 + 4 + 0 + 12 + 4 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 99560484 + 40564161 = 9978^2 + 6369^2 .

It is not a de Polignac number, because 140124645 - 2² = 140124641 is a prime.

It is a super-2 number, since 2×140124645² = 39269832272752050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140124641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1556896 + ... + 1556985.

It is an arithmetic number, because the mean of its divisors is an integer number (20240233).

Almost surely, 2^140124645 is an apocalyptic number.

140124645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140124645 is a deficient number, since it is larger than the sum of its proper divisors (102758151).

140124645 is a wasteful number, since it uses less digits than its factorization.

140124645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113892 (or 3113889 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 140124645 is about 11837.4256069468. The cubic root of 140124645 is about 519.4034641005.

Adding to 140124645 its reverse (546421041), we get a palindrome (686545686).

The spelling of 140124645 in words is "one hundred forty million, one hundred twenty-four thousand, six hundred forty-five".