140403220 has 12 divisors (see below), whose sum is σ = 294846804. Its totient is φ = 56161280.

The previous prime is 140403169. The next prime is 140403233. The reversal of 140403220 is 22304041.

It can be written as a sum of positive squares in 2 ways, for example, as 25441936 + 114961284 = 5044^2 + 10722^2 .

It is a super-3 number, since 3×140403220³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140403194 and 140403203.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3510061 + ... + 3510100.

It is an arithmetic number, because the mean of its divisors is an integer number (24570567).

Almost surely, 2^140403220 is an apocalyptic number.

140403220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140403220 is an abundant number, since it is smaller than the sum of its proper divisors (154443584).

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

140403220 is a wasteful number, since it uses less digits than its factorization.

140403220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020170 (or 7020168 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 140403220 is about 11849.1864699649. The cubic root of 140403220 is about 519.7474365216.

Adding to 140403220 its reverse (22304041), we get a palindrome (162707261).

The spelling of 140403220 in words is "one hundred forty million, four hundred three thousand, two hundred twenty".