140142400 has 42 divisors (see below), whose sum is σ = 344841830. Its totient is φ = 56056320.

The previous prime is 140142377. The next prime is 140142403. The reversal of 140142400 is 4241041.

It can be written as a sum of positive squares in 3 ways, for example, as 2408704 + 137733696 = 1552^2 + 11736^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140142403) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 42195 + ... + 45394.

Almost surely, 2^140142400 is an apocalyptic number.

140142400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140142400 is an abundant number, since it is smaller than the sum of its proper divisors (204699430).

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

140142400 is an equidigital number, since it uses as much as digits as its factorization.

140142400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87611 (or 87596 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 140142400 is about 11838.1755351068. The cubic root of 140142400 is about 519.4254008056.

Adding to 140142400 its reverse (4241041), we get a palindrome (144383441).

The spelling of 140142400 in words is "one hundred forty million, one hundred forty-two thousand, four hundred".