1242002422 has 16 divisors (see below), whose sum is σ = 2020706352. Its totient is φ = 570215680.

The previous prime is 1242002413. The next prime is 1242002429. The reversal of 1242002422 is 2242002421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242002422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242002429) 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 7 ways as a sum of consecutive naturals, for example, 444088 + ... + 446875.

It is an arithmetic number, because the mean of its divisors is an integer number (126294147).

Almost surely, 2^1242002422 is an apocalyptic number.

1242002422 is a deficient number, since it is larger than the sum of its proper divisors (778703930).

1242002422 is a wasteful number, since it uses less digits than its factorization.

1242002422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891023.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1242002422 is about 35242.0547357841. The cubic root of 1242002422 is about 1074.9150600275.

Adding to 1242002422 its reverse (2242002421), we get a palindrome (3484004843).

Subtracting 1242002422 from its reverse (2242002421), we obtain a palindrome (999999999).

The spelling of 1242002422 in words is "one billion, two hundred forty-two million, two thousand, four hundred twenty-two".