140040618 has 16 divisors (see below), whose sum is σ = 280332576. Its totient is φ = 46638320.

The previous prime is 140040617. The next prime is 140040619. The reversal of 140040618 is 816040041.

It is an interprime number because it is at equal distance from previous prime (140040617) and next prime (140040619).

It is a super-2 number, since 2×140040618² = 39222749379643848, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140040617) 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 7 ways as a sum of consecutive naturals, for example, 2796 + ... + 16967.

It is an arithmetic number, because the mean of its divisors is an integer number (17520786).

Almost surely, 2^140040618 is an apocalyptic number.

140040618 is an abundant number, since it is smaller than the sum of its proper divisors (140291958).

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

140040618 is a wasteful number, since it uses less digits than its factorization.

140040618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20949.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 140040618 is about 11833.8758654973. The cubic root of 140040618 is about 519.2996216927.

Adding to 140040618 its reverse (816040041), we get a palindrome (956080659).

The spelling of 140040618 in words is "one hundred forty million, forty thousand, six hundred eighteen".