140434807 has 4 divisors (see below), whose sum is σ = 148695696. Its totient is φ = 132173920.

The previous prime is 140434793. The next prime is 140434813. The reversal of 140434807 is 708434041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140434807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140434817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4130419 + ... + 4130452.

It is an arithmetic number, because the mean of its divisors is an integer number (37173924).

Almost surely, 2^140434807 is an apocalyptic number.

140434807 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

140434807 is a deficient number, since it is larger than the sum of its proper divisors (8260889).

140434807 is an equidigital number, since it uses as much as digits as its factorization.

140434807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8260888.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 140434807 is about 11850.5192713231. The cubic root of 140434807 is about 519.7864100610.

Adding to 140434807 its reverse (708434041), we get a palindrome (848868848).

The spelling of 140434807 in words is "one hundred forty million, four hundred thirty-four thousand, eight hundred seven".