140609140 has 48 divisors (see below), whose sum is σ = 345324672. Its totient is φ = 47085696.

The previous prime is 140609137. The next prime is 140609141. The reversal of 140609140 is 41906041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140609141) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5659 + ... + 17698.

It is an arithmetic number, because the mean of its divisors is an integer number (7194264).

Almost surely, 2^140609140 is an apocalyptic number.

140609140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140609140 is an abundant number, since it is smaller than the sum of its proper divisors (204715532).

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

140609140 is a wasteful number, since it uses less digits than its factorization.

140609140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23416 (or 23414 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 140609140 is about 11857.8724904597. The cubic root of 140609140 is about 520.0014053216.

The spelling of 140609140 in words is "one hundred forty million, six hundred nine thousand, one hundred forty".