6136421 has 4 divisors (see below), whose sum is σ = 6145344. Its totient is φ = 6127500.

The previous prime is 6136399. The next prime is 6136441. The reversal of 6136421 is 1246316.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6136421 - 2¹⁰ = 6135397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6136441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3335 + ... + 4836.

It is an arithmetic number, because the mean of its divisors is an integer number (1536336).

Almost surely, 2^6136421 is an apocalyptic number.

It is an amenable number.

6136421 is a deficient number, since it is larger than the sum of its proper divisors (8923).

6136421 is an equidigital number, since it uses as much as digits as its factorization.

6136421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8922.

The product of its digits is 864, while the sum is 23.

The square root of 6136421 is about 2477.1800499762. The cubic root of 6136421 is about 183.0789371500.

The spelling of 6136421 in words is "six million, one hundred thirty-six thousand, four hundred twenty-one".