13037421 has 8 divisors (see below), whose sum is σ = 17409600. Its totient is φ = 8678432.

The previous prime is 13037411. The next prime is 13037429. The reversal of 13037421 is 12473031.

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 13037421 - 2⁷ = 13037293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13037429) 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, 696 + ... + 5153.

It is an arithmetic number, because the mean of its divisors is an integer number (2176200).

Almost surely, 2^13037421 is an apocalyptic number.

It is an amenable number.

13037421 is a deficient number, since it is larger than the sum of its proper divisors (4372179).

13037421 is an equidigital number, since it uses as much as digits as its factorization.

13037421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6595.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 13037421 is about 3610.7369053976. The cubic root of 13037421 is about 235.3588662163.

The spelling of 13037421 in words is "thirteen million, thirty-seven thousand, four hundred twenty-one".