1213042106 has 16 divisors (see below), whose sum is σ = 1929021480. Its totient is φ = 570124800.

The previous prime is 1213042093. The next prime is 1213042153. The reversal of 1213042106 is 6012403121.

It can be written as a sum of positive squares in 4 ways, for example, as 1063346881 + 149695225 = 32609^2 + 12235^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5456 + ... + 49556.

Almost surely, 2^1213042106 is an apocalyptic number.

1213042106 is a deficient number, since it is larger than the sum of its proper divisors (715979374).

1213042106 is a wasteful number, since it uses less digits than its factorization.

1213042106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44929.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1213042106 is about 34828.7540115922. The cubic root of 1213042106 is about 1066.4945128202.

Adding to 1213042106 its reverse (6012403121), we get a palindrome (7225445227).

The spelling of 1213042106 in words is "one billion, two hundred thirteen million, forty-two thousand, one hundred six".