1252142226 has 40 divisors (see below), whose sum is σ = 2845269504. Its totient is φ = 411498360.

The previous prime is 1252142219. The next prime is 1252142231. The reversal of 1252142226 is 6222412521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1252142226.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42930 + ... + 65933.

Almost surely, 2^1252142226 is an apocalyptic number.

1252142226 is an abundant number, since it is smaller than the sum of its proper divisors (1593127278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252142226 is a wasteful number, since it uses less digits than its factorization.

1252142226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108948 (or 108939 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1252142226 is about 35385.6217410405. The cubic root of 1252142226 is about 1077.8323652808.

Adding to 1252142226 its reverse (6222412521), we get a palindrome (7474554747).

The spelling of 1252142226 in words is "one billion, two hundred fifty-two million, one hundred forty-two thousand, two hundred twenty-six".