140403400 has 24 divisors (see below), whose sum is σ = 326438370. Its totient is φ = 56161280.

The previous prime is 140403397. The next prime is 140403427. The reversal of 140403400 is 4304041.

It can be written as a sum of positive squares in 3 ways, for example, as 68459076 + 71944324 = 8274^2 + 8482^2 .

It is a super-3 number, since 3×140403400³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 350809 + ... + 351208.

Almost surely, 2^140403400 is an apocalyptic number.

140403400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140403400 is an abundant number, since it is smaller than the sum of its proper divisors (186034970).

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

140403400 is a wasteful number, since it uses less digits than its factorization.

140403400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702033 (or 702024 counting only the distinct ones).

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

The square root of 140403400 is about 11849.1940654207. The cubic root of 140403400 is about 519.7476586307.

Adding to 140403400 its reverse (4304041), we get a palindrome (144707441).

The spelling of 140403400 in words is "one hundred forty million, four hundred three thousand, four hundred".