1212036542 has 16 divisors (see below), whose sum is σ = 1853600112. Its totient is φ = 594185280.

The previous prime is 1212036521. The next prime is 1212036559. The reversal of 1212036542 is 2456302121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212042 + ... + 217682.

It is an arithmetic number, because the mean of its divisors is an integer number (115850007).

Almost surely, 2^1212036542 is an apocalyptic number.

1212036542 is a deficient number, since it is larger than the sum of its proper divisors (641563570).

1212036542 is a wasteful number, since it uses less digits than its factorization.

1212036542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7723.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1212036542 is about 34814.3151878649. The cubic root of 1212036542 is about 1066.1997374085.

Adding to 1212036542 its reverse (2456302121), we get a palindrome (3668338663).

The spelling of 1212036542 in words is "one billion, two hundred twelve million, thirty-six thousand, five hundred forty-two".