1212535242 has 24 divisors (see below), whose sum is σ = 2688258144. Its totient is φ = 394778664.

The previous prime is 1212535241. The next prime is 1212535253. The reversal of 1212535242 is 2425352121.

1212535242 is a `hidden beast` number, since 12 + 125 + 3 + 524 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1212535241) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 782518 + ... + 784065.

It is an arithmetic number, because the mean of its divisors is an integer number (112010756).

Almost surely, 2^1212535242 is an apocalyptic number.

1212535242 is an abundant number, since it is smaller than the sum of its proper divisors (1475722902).

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

1212535242 is a wasteful number, since it uses less digits than its factorization.

1212535242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566634 (or 1566631 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1212535242 is about 34821.4767349117. The cubic root of 1212535242 is about 1066.3459488693.

Adding to 1212535242 its reverse (2425352121), we get a palindrome (3637887363).

The spelling of 1212535242 in words is "one billion, two hundred twelve million, five hundred thirty-five thousand, two hundred forty-two".