140026645 has 48 divisors (see below), whose sum is σ = 199946880. Its totient is φ = 93779840.

The previous prime is 140026613. The next prime is 140026651. The reversal of 140026645 is 546620041.

It is not a de Polignac number, because 140026645 - 2⁵ = 140026613 is a prime.

It is a super-2 number, since 2×140026645² = 39214922619912050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 403362 + ... + 403708.

It is an arithmetic number, because the mean of its divisors is an integer number (4165560).

Almost surely, 2^140026645 is an apocalyptic number.

It is an amenable number.

140026645 is a deficient number, since it is larger than the sum of its proper divisors (59920235).

140026645 is a wasteful number, since it uses less digits than its factorization.

140026645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 140026645 is about 11833.2854693868. The cubic root of 140026645 is about 519.2823495254.

Adding to 140026645 its reverse (546620041), we get a palindrome (686646686).

The spelling of 140026645 in words is "one hundred forty million, twenty-six thousand, six hundred forty-five".