140121736 has 32 divisors (see below), whose sum is σ = 280569600. Its totient is φ = 65459520.

The previous prime is 140121733. The next prime is 140121739. The reversal of 140121736 is 637121041.

It is an interprime number because it is at equal distance from previous prime (140121733) and next prime (140121739).

It is a self number, because there is not a number n which added to its sum of digits gives 140121736.

It is not an unprimeable number, because it can be changed into a prime (140121731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2550 + ... + 16933.

It is an arithmetic number, because the mean of its divisors is an integer number (8767800).

Almost surely, 2^140121736 is an apocalyptic number.

It is an amenable number.

140121736 is an abundant number, since it is smaller than the sum of its proper divisors (140447864).

140121736 is a wasteful number, since it uses less digits than its factorization.

140121736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19549 (or 19545 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 140121736 is about 11837.3027333088. The cubic root of 140121736 is about 519.3998697884.

Adding to 140121736 its reverse (637121041), we get a palindrome (777242777).

The spelling of 140121736 in words is "one hundred forty million, one hundred twenty-one thousand, seven hundred thirty-six".