1252012126 has 4 divisors (see below), whose sum is σ = 1878018192. Its totient is φ = 626006062.

The previous prime is 1252012109. The next prime is 1252012169. The reversal of 1252012126 is 6212102521.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1252012097 and 1252012106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313003030 + ... + 313003033.

It is an arithmetic number, because the mean of its divisors is an integer number (469504548).

Almost surely, 2^1252012126 is an apocalyptic number.

1252012126 is a deficient number, since it is larger than the sum of its proper divisors (626006066).

1252012126 is an equidigital number, since it uses as much as digits as its factorization.

1252012126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626006065.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1252012126 is about 35383.7833760043. The cubic root of 1252012126 is about 1077.7950343651.

Adding to 1252012126 its reverse (6212102521), we get a palindrome (7464114647).

The spelling of 1252012126 in words is "one billion, two hundred fifty-two million, twelve thousand, one hundred twenty-six".