1243225434 has 16 divisors (see below), whose sum is σ = 2712492000. Its totient is φ = 376734960.

The previous prime is 1243225391. The next prime is 1243225441. The reversal of 1243225434 is 4345223421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9418309 + ... + 9418440.

It is an arithmetic number, because the mean of its divisors is an integer number (169530750).

Almost surely, 2^1243225434 is an apocalyptic number.

1243225434 is an abundant number, since it is smaller than the sum of its proper divisors (1469266566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243225434 is a wasteful number, since it uses less digits than its factorization.

1243225434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18836765.

The product of its digits is 23040, while the sum is 30.

The square root of 1243225434 is about 35259.4020652648. The cubic root of 1243225434 is about 1075.2677707574.

Adding to 1243225434 its reverse (4345223421), we get a palindrome (5588448855).

The spelling of 1243225434 in words is "one billion, two hundred forty-three million, two hundred twenty-five thousand, four hundred thirty-four".