1403145 has 12 divisors (see below), whose sum is σ = 2432196. Its totient is φ = 748320.

The previous prime is 1403137. The next prime is 1403147. The reversal of 1403145 is 5413041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 210681 + 1192464 = 459^2 + 1092^2 .

It is not a de Polignac number, because 1403145 - 2³ = 1403137 is a prime.

It is a Curzon number.

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 in 11 ways as a sum of consecutive naturals, for example, 15546 + ... + 15635.

It is an arithmetic number, because the mean of its divisors is an integer number (202683).

2^1403145 is an apocalyptic number.

1403145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1403145 is a deficient number, since it is larger than the sum of its proper divisors (1029051).

1403145 is a wasteful number, since it uses less digits than its factorization.

1403145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31192 (or 31189 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1403145 is about 1184.5442161439. The cubic root of 1403145 is about 111.9526000531.

Adding to 1403145 its reverse (5413041), we get a palindrome (6816186).

The spelling of 1403145 in words is "one million, four hundred three thousand, one hundred forty-five".