1403144 has 8 divisors (see below), whose sum is σ = 2630910. Its totient is φ = 701568.

The previous prime is 1403137. The next prime is 1403147. The reversal of 1403144 is 4413041.

It can be written as a sum of positive squares in only one way, i.e., 1350244 + 52900 = 1162^2 + 230^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1403147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87689 + ... + 87704.

2^1403144 is an apocalyptic number.

It is an amenable number.

1403144 is a deficient number, since it is larger than the sum of its proper divisors (1227766).

1403144 is a wasteful number, since it uses less digits than its factorization.

1403144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175399 (or 175395 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1403144 is about 1184.5437940406. The cubic root of 1403144 is about 111.9525734574.

Adding to 1403144 its reverse (4413041), we get a palindrome (5816185).

The spelling of 1403144 in words is "one million, four hundred three thousand, one hundred forty-four".