2145144 has 16 divisors (see below), whose sum is σ = 5362920. Its totient is φ = 715040.

The previous prime is 2145137. The next prime is 2145151. The reversal of 2145144 is 4415412.

It is a happy number.

2145144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2145137) and next prime (2145151).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2145144.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44667 + ... + 44714.

2^2145144 is an apocalyptic number.

2145144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2145144 is an abundant number, since it is smaller than the sum of its proper divisors (3217776).

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

2145144 is a wasteful number, since it uses less digits than its factorization.

2145144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89390 (or 89386 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 2145144 is about 1464.6310115521. The cubic root of 2145144 is about 128.9690449132.

The spelling of 2145144 in words is "two million, one hundred forty-five thousand, one hundred forty-four".