1242130422 has 64 divisors (see below), whose sum is σ = 2784418560. Its totient is φ = 366920064.

The previous prime is 1242130411. The next prime is 1242130427. The reversal of 1242130422 is 2240312421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242130427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194748 + ... + 201024.

It is an arithmetic number, because the mean of its divisors is an integer number (43506540).

Almost surely, 2^1242130422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242130422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392209280).

1242130422 is an abundant number, since it is smaller than the sum of its proper divisors (1542288138).

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

1242130422 is a wasteful number, since it uses less digits than its factorization.

1242130422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6397.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1242130422 is about 35243.8707011588. The cubic root of 1242130422 is about 1074.9519854524.

Adding to 1242130422 its reverse (2240312421), we get a palindrome (3482442843).

The spelling of 1242130422 in words is "one billion, two hundred forty-two million, one hundred thirty thousand, four hundred twenty-two".