13077421 has 8 divisors (see below), whose sum is σ = 15264000. Its totient is φ = 10970448.

The previous prime is 13077413. The next prime is 13077457. The reversal of 13077421 is 12477031.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13077421 - 2³ = 13077413 is a prime.

It is a super-2 number, since 2×13077421² = 342037880022482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13077481) 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, 19546 + ... + 20203.

It is an arithmetic number, because the mean of its divisors is an integer number (1908000).

Almost surely, 2^13077421 is an apocalyptic number.

It is an amenable number.

13077421 is a deficient number, since it is larger than the sum of its proper divisors (2186579).

13077421 is an equidigital number, since it uses as much as digits as its factorization.

13077421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39803.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 13077421 is about 3616.2716988633. The cubic root of 13077421 is about 235.5993213133.

The spelling of 13077421 in words is "thirteen million, seventy-seven thousand, four hundred twenty-one".