1252122413 has 4 divisors (see below), whose sum is σ = 1259620320. Its totient is φ = 1244624508.

The previous prime is 1252122409. The next prime is 1252122419. The reversal of 1252122413 is 3142212521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1252122413 - 2² = 1252122409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252122419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3748703 + ... + 3749036.

It is an arithmetic number, because the mean of its divisors is an integer number (314905080).

Almost surely, 2^1252122413 is an apocalyptic number.

It is an amenable number.

1252122413 is a deficient number, since it is larger than the sum of its proper divisors (7497907).

1252122413 is an equidigital number, since it uses as much as digits as its factorization.

1252122413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7497906.

The product of its digits is 960, while the sum is 23.

The square root of 1252122413 is about 35385.3417815909. The cubic root of 1252122413 is about 1077.8266803022.

Adding to 1252122413 its reverse (3142212521), we get a palindrome (4394334934).

The spelling of 1252122413 in words is "one billion, two hundred fifty-two million, one hundred twenty-two thousand, four hundred thirteen".