1242120022 has 64 divisors (see below), whose sum is σ = 2318803200. Its totient is φ = 490596480.

The previous prime is 1242120001. The next prime is 1242120023. The reversal of 1242120022 is 2200212421.

It is a junction number, because it is equal to n+sod(n) for n = 1242119978 and 1242120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242120023) 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, 972048 + ... + 973324.

It is an arithmetic number, because the mean of its divisors is an integer number (36231300).

Almost surely, 2^1242120022 is an apocalyptic number.

1242120022 is a deficient number, since it is larger than the sum of its proper divisors (1076683178).

1242120022 is a wasteful number, since it uses less digits than its factorization.

1242120022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1242120022 is about 35243.7231574645. The cubic root of 1242120022 is about 1074.9489853563.

Adding to 1242120022 its reverse (2200212421), we get a palindrome (3442332443).

The spelling of 1242120022 in words is "one billion, two hundred forty-two million, one hundred twenty thousand, twenty-two".