1342021 has 4 divisors (see below), whose sum is σ = 1385344. Its totient is φ = 1298700.

The previous prime is 1342007. The next prime is 1342049. The reversal of 1342021 is 1202431.

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: 1202431 = 1013 ⋅1187.

It is a cyclic number.

It is not a de Polignac number, because 1342021 - 2¹¹ = 1339973 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1341992 and 1342010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342001) 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, 21615 + ... + 21676.

It is an arithmetic number, because the mean of its divisors is an integer number (346336).

2^1342021 is an apocalyptic number.

It is an amenable number.

1342021 is a deficient number, since it is larger than the sum of its proper divisors (43323).

1342021 is an equidigital number, since it uses as much as digits as its factorization.

1342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43322.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1342021 is about 1158.4563004274. The cubic root of 1342021 is about 110.3027746645.

Adding to 1342021 its reverse (1202431), we get a palindrome (2544452).

The spelling of 1342021 in words is "one million, three hundred forty-two thousand, twenty-one".