140841009 has 12 divisors (see below), whose sum is σ = 206772852. Its totient is φ = 92354400.

The previous prime is 140840989. The next prime is 140841031. The reversal of 140841009 is 900148041.

It can be written as a sum of positive squares in 2 ways, for example, as 42771600 + 98069409 = 6540^2 + 9903^2 .

It is not a de Polignac number, because 140841009 - 2¹¹ = 140838961 is a prime.

It is a super-2 number, since 2×140841009² = 39672379632276162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140841079) 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, 127722 + ... + 128819.

It is an arithmetic number, because the mean of its divisors is an integer number (17231071).

Almost surely, 2^140841009 is an apocalyptic number.

It is an amenable number.

140841009 is a deficient number, since it is larger than the sum of its proper divisors (65931843).

140841009 is a wasteful number, since it uses less digits than its factorization.

140841009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256608 (or 256605 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 140841009 is about 11867.6454699321. The cubic root of 140841009 is about 520.2870813706.

The spelling of 140841009 in words is "one hundred forty million, eight hundred forty-one thousand, nine".