140671040 has 84 divisors (see below), whose sum is σ = 347211396. Its totient is φ = 54245376.

The previous prime is 140671033. The next prime is 140671043. The reversal of 140671040 is 40176041.

It can be written as a sum of positive squares in 6 ways, for example, as 17372224 + 123298816 = 4168^2 + 11104^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140670997 and 140671015.

It is not an unprimeable number, because it can be changed into a prime (140671043) 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, 1290506 + ... + 1290614.

It is an arithmetic number, because the mean of its divisors is an integer number (4133469).

Almost surely, 2^140671040 is an apocalyptic number.

140671040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140671040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173605698).

140671040 is an abundant number, since it is smaller than the sum of its proper divisors (206540356).

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

140671040 is an equidigital number, since it uses as much as digits as its factorization.

140671040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 140671040 is about 11860.4822836173. The cubic root of 140671040 is about 520.0777004207.

The spelling of 140671040 in words is "one hundred forty million, six hundred seventy-one thousand, forty".