1242130122 has 12 divisors (see below), whose sum is σ = 2691281970. Its totient is φ = 414043368.

The previous prime is 1242130081. The next prime is 1242130133. The reversal of 1242130122 is 2210312421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1231378281 + 10751841 = 35091^2 + 3279^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 69007229 = 1242130122 / (1 + 2 + 4 + 2 + 1 + 3 + 0 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1242130095 and 1242130104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34503597 + ... + 34503632.

Almost surely, 2^1242130122 is an apocalyptic number.

1242130122 is an abundant number, since it is smaller than the sum of its proper divisors (1449151848).

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

1242130122 is a wasteful number, since it uses less digits than its factorization.

1242130122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69007237 (or 69007234 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1242130122 is about 35243.8664450994. The cubic root of 1242130122 is about 1074.9518989114.

Adding to 1242130122 its reverse (2210312421), we get a palindrome (3452442543).

The spelling of 1242130122 in words is "one billion, two hundred forty-two million, one hundred thirty thousand, one hundred twenty-two".