140343020 has 12 divisors (see below), whose sum is σ = 294720384. Its totient is φ = 56137200.

The previous prime is 140342999. The next prime is 140343029. The reversal of 140343020 is 20343041.

It is a self number, because there is not a number n which added to its sum of digits gives 140343020.

It is not an unprimeable number, because it can be changed into a prime (140343029) 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, 3508556 + ... + 3508595.

It is an arithmetic number, because the mean of its divisors is an integer number (24560032).

Almost surely, 2^140343020 is an apocalyptic number.

140343020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140343020 is an abundant number, since it is smaller than the sum of its proper divisors (154377364).

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

140343020 is a wasteful number, since it uses less digits than its factorization.

140343020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017160 (or 7017158 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 140343020 is about 11846.6459388301. The cubic root of 140343020 is about 519.6731427160.

Adding to 140343020 its reverse (20343041), we get a palindrome (160686061).

The spelling of 140343020 in words is "one hundred forty million, three hundred forty-three thousand, twenty".