140200128 has 42 divisors (see below), whose sum is σ = 401860004. Its totient is φ = 46733184.

The previous prime is 140200127. The next prime is 140200129. The reversal of 140200128 is 821002041.

It is an interprime number because it is at equal distance from previous prime (140200127) and next prime (140200129).

It is a super-3 number, since 3×140200128³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 140200128.

It is not an unprimeable number, because it can be changed into a prime (140200121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121126 + ... + 122277.

Almost surely, 2^140200128 is an apocalyptic number.

140200128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

140200128 is an abundant number, since it is smaller than the sum of its proper divisors (261659876).

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

140200128 is a wasteful number, since it uses less digits than its factorization.

140200128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243421 (or 243408 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 140200128 is about 11840.6134976191. The cubic root of 140200128 is about 519.4967122556.

Adding to 140200128 its reverse (821002041), we get a palindrome (961202169).

The spelling of 140200128 in words is "one hundred forty million, two hundred thousand, one hundred twenty-eight".