12123050642 has 32 divisors (see below), whose sum is σ = 19898679024. Its totient is φ = 5516492800.

The previous prime is 12123050603. The next prime is 12123050689. The reversal of 12123050642 is 24605032121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 47458321 + 12075592321 = 6889^2 + 109889^2 .

It is a super-2 number, since 2×12123050642² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119042 + ... + 196002.

Almost surely, 2^12123050642 is an apocalyptic number.

12123050642 is a deficient number, since it is larger than the sum of its proper divisors (7775628382).

12123050642 is a wasteful number, since it uses less digits than its factorization.

12123050642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77134.

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

Adding to 12123050642 its reverse (24605032121), we get a palindrome (36728082763).

The spelling of 12123050642 in words is "twelve billion, one hundred twenty-three million, fifty thousand, six hundred forty-two".