814240140 has 96 divisors (see below), whose sum is σ = 2613886464. Its totient is φ = 185518080.

The previous prime is 814240129. The next prime is 814240153. The reversal of 814240140 is 41042418.

It is a self number, because there is not a number n which added to its sum of digits gives 814240140.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136092 + ... + 141948.

It is an arithmetic number, because the mean of its divisors is an integer number (27227984).

Almost surely, 2^814240140 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 814240140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306943232).

814240140 is an abundant number, since it is smaller than the sum of its proper divisors (1799646324).

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

814240140 is a wasteful number, since it uses less digits than its factorization.

814240140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6207 (or 6205 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 814240140 is about 28534.8933763559. The cubic root of 814240140 is about 933.7934774714.

Adding to 814240140 its reverse (41042418), we get a palindrome (855282558).

The spelling of 814240140 in words is "eight hundred fourteen million, two hundred forty thousand, one hundred forty".