13421775 has 24 divisors (see below), whose sum is σ = 22530304. Its totient is φ = 7048800.

The previous prime is 13421767. The next prime is 13421783. The reversal of 13421775 is 57712431.

It is an interprime number because it is at equal distance from previous prime (13421767) and next prime (13421783).

It is not a de Polignac number, because 13421775 - 2³ = 13421767 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3690 + ... + 6360.

Almost surely, 2^13421775 is an apocalyptic number.

13421775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13421775 is a deficient number, since it is larger than the sum of its proper divisors (9108529).

13421775 is a wasteful number, since it uses less digits than its factorization.

13421775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751 (or 2746 counting only the distinct ones).

The product of its digits is 5880, while the sum is 30.

The square root of 13421775 is about 3663.5740745889. The cubic root of 13421775 is about 237.6493612656.

It can be divided in two parts, 13421 and 775, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 13421775 in words is "thirteen million, four hundred twenty-one thousand, seven hundred seventy-five".