140121400 has 48 divisors (see below), whose sum is σ = 331954200. Its totient is φ = 54986880.

The previous prime is 140121349. The next prime is 140121407. The reversal of 140121400 is 4121041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140121407) 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 11 ways as a sum of consecutive naturals, for example, 3991 + ... + 17209.

Almost surely, 2^140121400 is an apocalyptic number.

140121400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140121400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165977100).

140121400 is an abundant number, since it is smaller than the sum of its proper divisors (191832800).

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

140121400 is a wasteful number, since it uses less digits than its factorization.

140121400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13288 (or 13279 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 140121400 is about 11837.2885408779. The cubic root of 140121400 is about 519.3994546292.

Adding to 140121400 its reverse (4121041), we get a palindrome (144242441).

It can be divided in two parts, 1401 and 21400, that added together give a square (22801 = 151²).

The spelling of 140121400 in words is "one hundred forty million, one hundred twenty-one thousand, four hundred".