1212403104 has 72 divisors (see below), whose sum is σ = 3761214912. Its totient is φ = 367393920.

The previous prime is 1212403099. The next prime is 1212403111. The reversal of 1212403104 is 4013042121.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188184 + ... + 194519.

It is an arithmetic number, because the mean of its divisors is an integer number (52239096).

Almost surely, 2^1212403104 is an apocalyptic number.

It is an amenable number.

1212403104 is an abundant number, since it is smaller than the sum of its proper divisors (2548811808).

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

1212403104 is a wasteful number, since it uses less digits than its factorization.

1212403104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382730 (or 382719 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1212403104 is about 34819.5793196874. The cubic root of 1212403104 is about 1066.3072118674.

Adding to 1212403104 its reverse (4013042121), we get a palindrome (5225445225).

The spelling of 1212403104 in words is "one billion, two hundred twelve million, four hundred three thousand, one hundred four".