1212425434 has 16 divisors (see below), whose sum is σ = 2013582816. Its totient is φ = 542876400.

The previous prime is 1212425429. The next prime is 1212425437. The reversal of 1212425434 is 4345242121.

It is not an unprimeable number, because it can be changed into a prime (1212425437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409797 + ... + 412744.

It is an arithmetic number, because the mean of its divisors is an integer number (125848926).

Almost surely, 2^1212425434 is an apocalyptic number.

1212425434 is a deficient number, since it is larger than the sum of its proper divisors (801157382).

1212425434 is a wasteful number, since it uses less digits than its factorization.

1212425434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822621.

The product of its digits is 7680, while the sum is 28.

The square root of 1212425434 is about 34819.8999711372. The cubic root of 1212425434 is about 1066.3137582308.

Adding to 1212425434 its reverse (4345242121), we get a palindrome (5557667555).

The spelling of 1212425434 in words is "one billion, two hundred twelve million, four hundred twenty-five thousand, four hundred thirty-four".