1234445042 has 4 divisors (see below), whose sum is σ = 1851667566. Its totient is φ = 617222520.

The previous prime is 1234445011. The next prime is 1234445053. The reversal of 1234445042 is 2405444321.

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., 1225630081 + 8814961 = 35009^2 + 2969^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1234444996 and 1234445014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308611259 + ... + 308611262.

Almost surely, 2^1234445042 is an apocalyptic number.

1234445042 is a deficient number, since it is larger than the sum of its proper divisors (617222524).

1234445042 is an equidigital number, since it uses as much as digits as its factorization.

1234445042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617222523.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 1234445042 is about 35134.6700852591. The cubic root of 1234445042 is about 1072.7303959286.

Adding to 1234445042 its reverse (2405444321), we get a palindrome (3639889363).

The spelling of 1234445042 in words is "one billion, two hundred thirty-four million, four hundred forty-five thousand, forty-two".