140234709 has 4 divisors (see below), whose sum is σ = 186979616. Its totient is φ = 93489804.

The previous prime is 140234701. The next prime is 140234711. The reversal of 140234709 is 907432041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 140234709 - 2³ = 140234701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140234701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23372449 + ... + 23372454.

It is an arithmetic number, because the mean of its divisors is an integer number (46744904).

Almost surely, 2^140234709 is an apocalyptic number.

It is an amenable number.

140234709 is a deficient number, since it is larger than the sum of its proper divisors (46744907).

140234709 is an equidigital number, since it uses as much as digits as its factorization.

140234709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46744906.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 140234709 is about 11842.0736782035. The cubic root of 140234709 is about 519.5394208209.

The spelling of 140234709 in words is "one hundred forty million, two hundred thirty-four thousand, seven hundred nine".