140121600 has 240 divisors, whose sum is σ = 479500560. Its totient is φ = 36044800.

The previous prime is 140121593. The next prime is 140121607. The reversal of 140121600 is 6121041.

It is an interprime number because it is at equal distance from previous prime (140121593) and next prime (140121607).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 140121600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140121607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1574356 + ... + 1574444.

It is an arithmetic number, because the mean of its divisors is an integer number (1997919).

Almost surely, 2^140121600 is an apocalyptic number.

140121600 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 140121600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239750280).

140121600 is an abundant number, since it is smaller than the sum of its proper divisors (339378960).

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

140121600 is an equidigital number, since it uses as much as digits as its factorization.

140121600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 140121600 is about 11837.2969887555. The cubic root of 140121600 is about 519.3997017478.

Adding to 140121600 its reverse (6121041), we get a palindrome (146242641).

The spelling of 140121600 in words is "one hundred forty million, one hundred twenty-one thousand, six hundred".