1342420042 has 4 divisors (see below), whose sum is σ = 2013630066. Its totient is φ = 671210020.

The previous prime is 1342420039. The next prime is 1342420043. The reversal of 1342420042 is 2400242431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1342416321 + 3721 = 36639^2 + 61^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1342419995 and 1342420022.

It is not an unprimeable number, because it can be changed into a prime (1342420043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335605009 + ... + 335605012.

Almost surely, 2^1342420042 is an apocalyptic number.

1342420042 is a deficient number, since it is larger than the sum of its proper divisors (671210024).

1342420042 is an equidigital number, since it uses as much as digits as its factorization.

1342420042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671210023.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1342420042 is about 36639.0507791891. The cubic root of 1342420042 is about 1103.1370620675.

Adding to 1342420042 its reverse (2400242431), we get a palindrome (3742662473).

The spelling of 1342420042 in words is "one billion, three hundred forty-two million, four hundred twenty thousand, forty-two".