1367421 has 12 divisors (see below), whose sum is σ = 2004576. Its totient is φ = 828520.

The previous prime is 1367417. The next prime is 1367423. The reversal of 1367421 is 1247631.

It is not a de Polignac number, because 1367421 - 2² = 1367417 is a prime.

1367421 is a lucky number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1367391 and 1367400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1367423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1521 + ... + 2246.

It is an arithmetic number, because the mean of its divisors is an integer number (167048).

2^1367421 is an apocalyptic number.

1367421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1367421 is a deficient number, since it is larger than the sum of its proper divisors (637155).

1367421 is a wasteful number, since it uses less digits than its factorization.

1367421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792 (or 3781 counting only the distinct ones).

The product of its digits is 1008, while the sum is 24.

The square root of 1367421 is about 1169.3677779039. The cubic root of 1367421 is about 110.9943183522.

It can be divided in two parts, 13674 and 21, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 1367421 in words is "one million, three hundred sixty-seven thousand, four hundred twenty-one".