1426381 has 4 divisors (see below), whose sum is σ = 1556064. Its totient is φ = 1296700.

The previous prime is 1426379. The next prime is 1426393. The reversal of 1426381 is 1836241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1836241 = 11 ⋅166931.

It is a cyclic number.

It is not a de Polignac number, because 1426381 - 2¹ = 1426379 is a prime.

It is a super-2 number, since 2×1426381² = 4069125514322, 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 (1426301) 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, 64825 + ... + 64846.

It is an arithmetic number, because the mean of its divisors is an integer number (389016).

2^1426381 is an apocalyptic number.

1426381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1426381 is a deficient number, since it is larger than the sum of its proper divisors (129683).

1426381 is a wasteful number, since it uses less digits than its factorization.

1426381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129682.

The product of its digits is 1152, while the sum is 25.

The square root of 1426381 is about 1194.3119358024. The cubic root of 1426381 is about 112.5671960699.

The spelling of 1426381 in words is "one million, four hundred twenty-six thousand, three hundred eighty-one".