13142305 has 16 divisors (see below), whose sum is σ = 17607744. Its totient is φ = 9334080.

The previous prime is 13142299. The next prime is 13142321. The reversal of 13142305 is 50324131.

13142305 = 615² + 616² + ... + 647².

It is not a de Polignac number, because 13142305 - 2¹³ = 13134113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414 + ... + 5143.

It is an arithmetic number, because the mean of its divisors is an integer number (1100484).

Almost surely, 2^13142305 is an apocalyptic number.

It is an amenable number.

13142305 is a deficient number, since it is larger than the sum of its proper divisors (4465439).

13142305 is a wasteful number, since it uses less digits than its factorization.

13142305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5616.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13142305 is about 3625.2317167320. The cubic root of 13142305 is about 235.9883229404.

Adding to 13142305 its reverse (50324131), we get a palindrome (63466436).

It can be divided in two parts, 131 and 42305, that added together give a square (42436 = 206²).

The spelling of 13142305 in words is "thirteen million, one hundred forty-two thousand, three hundred five".