140420140 has 24 divisors (see below), whose sum is σ = 337008672. Its totient is φ = 48144000.

The previous prime is 140420107. The next prime is 140420191. The reversal of 140420140 is 41024041.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501361 + ... + 501640.

It is an arithmetic number, because the mean of its divisors is an integer number (14042028).

Almost surely, 2^140420140 is an apocalyptic number.

140420140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140420140 is an abundant number, since it is smaller than the sum of its proper divisors (196588532).

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

140420140 is a wasteful number, since it uses less digits than its factorization.

140420140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003017 (or 1003015 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 140420140 is about 11849.9004215225. The cubic root of 140420140 is about 519.7683139474.

Adding to 140420140 its reverse (41024041), we get a palindrome (181444181).

The spelling of 140420140 in words is "one hundred forty million, four hundred twenty thousand, one hundred forty".