1212400403434 has 16 divisors (see below), whose sum is σ = 1983956463360. Its totient is φ = 551083167360.

The previous prime is 1212400403323. The next prime is 1212400403441. The reversal of 1212400403434 is 4343040042121.

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, 1336762 + ... + 2052250.

It is an arithmetic number, because the mean of its divisors is an integer number (123997278960).

Almost surely, 2^{1212400403434} is an apocalyptic number.

1212400403434 is a deficient number, since it is larger than the sum of its proper divisors (771556059926).

1212400403434 is a wasteful number, since it uses less digits than its factorization.

1212400403434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792525.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1212400403434 its reverse (4343040042121), we get a palindrome (5555440445555).

The spelling of 1212400403434 in words is "one trillion, two hundred twelve billion, four hundred million, four hundred three thousand, four hundred thirty-four".