13403145 has 16 divisors (see below), whose sum is σ = 24508800. Its totient is φ = 6127104.

The previous prime is 13403119. The next prime is 13403147. The reversal of 13403145 is 54130431.

It is not a de Polignac number, because 13403145 - 2⁸ = 13402889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (13403147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63720 + ... + 63929.

It is an arithmetic number, because the mean of its divisors is an integer number (1531800).

Almost surely, 2^13403145 is an apocalyptic number.

13403145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13403145 is a deficient number, since it is larger than the sum of its proper divisors (11105655).

13403145 is a wasteful number, since it uses less digits than its factorization.

13403145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127664.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 13403145 is about 3661.0305926064. The cubic root of 13403145 is about 237.5393545126.

Adding to 13403145 its reverse (54130431), we get a palindrome (67533576).

The spelling of 13403145 in words is "thirteen million, four hundred three thousand, one hundred forty-five".