1243122434 has 16 divisors (see below), whose sum is σ = 1878070272. Its totient is φ = 617107248.

The previous prime is 1243122431. The next prime is 1243122487. The reversal of 1243122434 is 4342213421.

It is not an unprimeable number, because it can be changed into a prime (1243122431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540992 + ... + 543284.

It is an arithmetic number, because the mean of its divisors is an integer number (117379392).

Almost surely, 2^1243122434 is an apocalyptic number.

1243122434 is a deficient number, since it is larger than the sum of its proper divisors (634947838).

1243122434 is a wasteful number, since it uses less digits than its factorization.

1243122434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121.

The product of its digits is 4608, while the sum is 26.

The square root of 1243122434 is about 35257.9414316832. The cubic root of 1243122434 is about 1075.2380749795.

Adding to 1243122434 its reverse (4342213421), we get a palindrome (5585335855).

The spelling of 1243122434 in words is "one billion, two hundred forty-three million, one hundred twenty-two thousand, four hundred thirty-four".