140137500 has 144 divisors (see below), whose sum is σ = 423910368. Its totient is φ = 36000000.

The previous prime is 140137499. The next prime is 140137507. The reversal of 140137500 is 5731041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140137507) 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 47 ways as a sum of consecutive naturals, for example, 1387450 + ... + 1387550.

It is an arithmetic number, because the mean of its divisors is an integer number (2943822).

Almost surely, 2^140137500 is an apocalyptic number.

140137500 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 140137500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211955184).

140137500 is an abundant number, since it is smaller than the sum of its proper divisors (283772868).

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

140137500 is a wasteful number, since it uses less digits than its factorization.

140137500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 140137500 is about 11837.9685757312. The cubic root of 140137500 is about 519.4193469296.

Adding to 140137500 its reverse (5731041), we get a palindrome (145868541).

The spelling of 140137500 in words is "one hundred forty million, one hundred thirty-seven thousand, five hundred".