3145440140 has 12 divisors (see below), whose sum is σ = 6605424336. Its totient is φ = 1258176048.

The previous prime is 3145440107. The next prime is 3145440149. The reversal of 3145440140 is 410445413.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3145440149) 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, 78635984 + ... + 78636023.

It is an arithmetic number, because the mean of its divisors is an integer number (550452028).

Almost surely, 2^3145440140 is an apocalyptic number.

It is an amenable number.

3145440140 is an abundant number, since it is smaller than the sum of its proper divisors (3459984196).

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

3145440140 is a wasteful number, since it uses less digits than its factorization.

3145440140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157272016 (or 157272014 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 3145440140 is about 56084.2236283966. The cubic root of 3145440140 is about 1465.1895354415.

Adding to 3145440140 its reverse (410445413), we get a palindrome (3555885553).

The spelling of 3145440140 in words is "three billion, one hundred forty-five million, four hundred forty thousand, one hundred forty".