1234212123 has 16 divisors (see below), whose sum is σ = 1662423840. Its totient is φ = 814420224.

The previous prime is 1234212107. The next prime is 1234212149. The reversal of 1234212123 is 3212124321.

It is not a de Polignac number, because 1234212123 - 2⁴ = 1234212107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1234212123.

It is not an unprimeable number, because it can be changed into a prime (1234212163) 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 15 ways as a sum of consecutive naturals, for example, 624565 + ... + 626537.

It is an arithmetic number, because the mean of its divisors is an integer number (103901490).

Almost surely, 2^1234212123 is an apocalyptic number.

1234212123 is a deficient number, since it is larger than the sum of its proper divisors (428211717).

1234212123 is a wasteful number, since it uses less digits than its factorization.

1234212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998.

The product of its digits is 576, while the sum is 21.

The square root of 1234212123 is about 35131.3552684778. The cubic root of 1234212123 is about 1072.6629229619.

Adding to 1234212123 its reverse (3212124321), we get a palindrome (4446336444).

The spelling of 1234212123 in words is "one billion, two hundred thirty-four million, two hundred twelve thousand, one hundred twenty-three".