1382421 has 16 divisors (see below), whose sum is σ = 1971200. Its totient is φ = 859248.

The previous prime is 1382419. The next prime is 1382449. The reversal of 1382421 is 1242831.

It is not a de Polignac number, because 1382421 - 2¹ = 1382419 is a prime.

It is a super-2 number, since 2×1382421² = 3822175642482, 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 (1382021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4350 + ... + 4656.

It is an arithmetic number, because the mean of its divisors is an integer number (123200).

2^1382421 is an apocalyptic number.

It is an amenable number.

1382421 is a deficient number, since it is larger than the sum of its proper divisors (588779).

1382421 is a wasteful number, since it uses less digits than its factorization.

1382421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408.

The product of its digits is 384, while the sum is 21.

The square root of 1382421 is about 1175.7640069334. The cubic root of 1382421 is about 111.3986960858.

The spelling of 1382421 in words is "one million, three hundred eighty-two thousand, four hundred twenty-one".