1342021423 has 4 divisors (see below), whose sum is σ = 1349436088. Its totient is φ = 1334606760.

The previous prime is 1342021393. The next prime is 1342021451. The reversal of 1342021423 is 3241202431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3241202431 = 41233 ⋅78607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1342021423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1342021394 and 1342021403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342021453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3707061 + ... + 3707422.

It is an arithmetic number, because the mean of its divisors is an integer number (337359022).

Almost surely, 2^1342021423 is an apocalyptic number.

1342021423 is a deficient number, since it is larger than the sum of its proper divisors (7414665).

1342021423 is an equidigital number, since it uses as much as digits as its factorization.

1342021423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7414664.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1342021423 is about 36633.6105646168. The cubic root of 1342021423 is about 1103.0278625346.

Adding to 1342021423 its reverse (3241202431), we get a palindrome (4583223854).

It can be divided in two parts, 13420 and 21423, that added together give a palindrome (34843).

The spelling of 1342021423 in words is "one billion, three hundred forty-two million, twenty-one thousand, four hundred twenty-three".