13421534 has 16 divisors (see below), whose sum is σ = 24362208. Its totient is φ = 5413632.

The previous prime is 13421533. The next prime is 13421537. The reversal of 13421534 is 43512431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27959 + ... + 28434.

It is an arithmetic number, because the mean of its divisors is an integer number (1522638).

Almost surely, 2^13421534 is an apocalyptic number.

13421534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13421534 is a deficient number, since it is larger than the sum of its proper divisors (10940674).

13421534 is a wasteful number, since it uses less digits than its factorization.

13421534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56419.

The product of its digits is 1440, while the sum is 23.

The square root of 13421534 is about 3663.5411830632. The cubic root of 13421534 is about 237.6479388546.

Adding to 13421534 its reverse (43512431), we get a palindrome (56933965).

The spelling of 13421534 in words is "thirteen million, four hundred twenty-one thousand, five hundred thirty-four".