12421395 has 48 divisors (see below), whose sum is σ = 25159680. Its totient is φ = 5550912.

The previous prime is 12421393. The next prime is 12421397. The reversal of 12421395 is 59312421.

12421395 = 316² + 317² + ... + 409².

12421395 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12421393) and next prime (12421397).

It is not a de Polignac number, because 12421395 - 2¹ = 12421393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12421391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14386 + ... + 15224.

It is an arithmetic number, because the mean of its divisors is an integer number (524160).

Almost surely, 2^12421395 is an apocalyptic number.

12421395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12421395 is an abundant number, since it is smaller than the sum of its proper divisors (12738285).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12421395 is a wasteful number, since it uses less digits than its factorization.

12421395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904 (or 901 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 12421395 is about 3524.3999489275. The cubic root of 12421395 is about 231.5919489447.

The spelling of 12421395 in words is "twelve million, four hundred twenty-one thousand, three hundred ninety-five".