1251102242 has 16 divisors (see below), whose sum is σ = 2032309440. Its totient is φ = 574203792.

The previous prime is 1251102241. The next prime is 1251102263. The reversal of 1251102242 is 2422011521.

It is not an unprimeable number, because it can be changed into a prime (1251102241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129758 + ... + 139065.

It is an arithmetic number, because the mean of its divisors is an integer number (127019340).

Almost surely, 2^1251102242 is an apocalyptic number.

1251102242 is a deficient number, since it is larger than the sum of its proper divisors (781207198).

1251102242 is a wasteful number, since it uses less digits than its factorization.

1251102242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269017.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1251102242 is about 35370.9236803338. The cubic root of 1251102242 is about 1077.5338797816.

Adding to 1251102242 its reverse (2422011521), we get a palindrome (3673113763).

The spelling of 1251102242 in words is "one billion, two hundred fifty-one million, one hundred two thousand, two hundred forty-two".