140540128 has 24 divisors (see below), whose sum is σ = 283439520. Its totient is φ = 68555520.

The previous prime is 140540123. The next prime is 140540129. The reversal of 140540128 is 821045041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140540123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52248 + ... + 54871.

It is an arithmetic number, because the mean of its divisors is an integer number (11809980).

Almost surely, 2^140540128 is an apocalyptic number.

It is an amenable number.

140540128 is an abundant number, since it is smaller than the sum of its proper divisors (142899392).

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

140540128 is a wasteful number, since it uses less digits than its factorization.

140540128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107170 (or 107162 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 140540128 is about 11854.9621678013. The cubic root of 140540128 is about 519.9163178949.

Adding to 140540128 its reverse (821045041), we get a palindrome (961585169).

The spelling of 140540128 in words is "one hundred forty million, five hundred forty thousand, one hundred twenty-eight".