140434520 has 32 divisors (see below), whose sum is σ = 317632320. Its totient is φ = 55879680.

The previous prime is 140434507. The next prime is 140434523. The reversal of 140434520 is 25434041.

140434520 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140434523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376 + ... + 16815.

It is an arithmetic number, because the mean of its divisors is an integer number (9926010).

Almost surely, 2^140434520 is an apocalyptic number.

140434520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140434520 is an abundant number, since it is smaller than the sum of its proper divisors (177197800).

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

140434520 is a wasteful number, since it uses less digits than its factorization.

140434520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18395 (or 18391 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 140434520 is about 11850.5071621429. The cubic root of 140434520 is about 519.7860559731.

Adding to 140434520 its reverse (25434041), we get a palindrome (165868561).

The spelling of 140434520 in words is "one hundred forty million, four hundred thirty-four thousand, five hundred twenty".