4140144 has 30 divisors (see below), whose sum is σ = 11587056. Its totient is φ = 1380000.

The previous prime is 4140133. The next prime is 4140173. The reversal of 4140144 is 4410414.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14232 + ... + 14519.

Almost surely, 2^4140144 is an apocalyptic number.

It is an amenable number.

4140144 is an abundant number, since it is smaller than the sum of its proper divisors (7446912).

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

4140144 is a wasteful number, since it uses less digits than its factorization.

4140144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28765 (or 28756 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4140144 is about 2034.7343806994. The cubic root of 4140144 is about 160.5727390329.

Adding to 4140144 its reverse (4410414), we get a palindrome (8550558).

The spelling of 4140144 in words is "four million, one hundred forty thousand, one hundred forty-four".