1337421 has 4 divisors (see below), whose sum is σ = 1783232. Its totient is φ = 891612.

The previous prime is 1337419. The next prime is 1337431. The reversal of 1337421 is 1247331.

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 not a de Polignac number, because 1337421 - 2¹ = 1337419 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1337411) 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, 222901 + ... + 222906.

It is an arithmetic number, because the mean of its divisors is an integer number (445808).

2^1337421 is an apocalyptic number.

It is an amenable number.

1337421 is a deficient number, since it is larger than the sum of its proper divisors (445811).

1337421 is an equidigital number, since it uses as much as digits as its factorization.

1337421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445810.

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

The square root of 1337421 is about 1156.4691954393. The cubic root of 1337421 is about 110.1766033665.

The spelling of 1337421 in words is "one million, three hundred thirty-seven thousand, four hundred twenty-one".