1242334445 has 16 divisors (see below), whose sum is σ = 1628793792. Its totient is φ = 902146560.

The previous prime is 1242334427. The next prime is 1242334477. The reversal of 1242334445 is 5444332421.

It is a de Polignac number, because none of the positive numbers 2^k-1242334445 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 20234 + ... + 53796.

It is an arithmetic number, because the mean of its divisors is an integer number (101799612).

Almost surely, 2^1242334445 is an apocalyptic number.

It is an amenable number.

1242334445 is a deficient number, since it is larger than the sum of its proper divisors (386459347).

1242334445 is a wasteful number, since it uses less digits than its factorization.

1242334445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34252.

The product of its digits is 46080, while the sum is 32.

The square root of 1242334445 is about 35246.7650288647. The cubic root of 1242334445 is about 1075.0108367395.

Adding to 1242334445 its reverse (5444332421), we get a palindrome (6686666866).

The spelling of 1242334445 in words is "one billion, two hundred forty-two million, three hundred thirty-four thousand, four hundred forty-five".