1345252442 has 4 divisors (see below), whose sum is σ = 2017878666. Its totient is φ = 672626220.

The previous prime is 1345252429. The next prime is 1345252481. The reversal of 1345252442 is 2442525431.

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., 813903841 + 531348601 = 28529^2 + 23051^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1345252399 and 1345252408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336313109 + ... + 336313112.

Almost surely, 2^1345252442 is an apocalyptic number.

1345252442 is a deficient number, since it is larger than the sum of its proper divisors (672626224).

1345252442 is an equidigital number, since it uses as much as digits as its factorization.

1345252442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672626223.

The product of its digits is 38400, while the sum is 32.

The square root of 1345252442 is about 36677.6831601997. The cubic root of 1345252442 is about 1103.9123610024.

Adding to 1345252442 its reverse (2442525431), we get a palindrome (3787777873).

The spelling of 1345252442 in words is "one billion, three hundred forty-five million, two hundred fifty-two thousand, four hundred forty-two".