140212128 has 144 divisors (see below), whose sum is σ = 439193664. Its totient is φ = 39029760.

The previous prime is 140212043. The next prime is 140212157. The reversal of 140212128 is 821212041.

140212128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192501 + ... + 193227.

It is an arithmetic number, because the mean of its divisors is an integer number (3049956).

Almost surely, 2^140212128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140212128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219596832).

140212128 is an abundant number, since it is smaller than the sum of its proper divisors (298981536).

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

140212128 is a wasteful number, since it uses less digits than its factorization.

140212128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 140212128 is about 11841.1202172767. The cubic root of 140212128 is about 519.5115334087.

Adding to 140212128 its reverse (821212041), we get a palindrome (961424169).

It can be divided in two parts, 1402 and 12128, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 140212128 in words is "one hundred forty million, two hundred twelve thousand, one hundred twenty-eight".