1242221422 has 32 divisors (see below), whose sum is σ = 2045935584. Its totient is φ = 562224000.

The previous prime is 1242221419. The next prime is 1242221423. The reversal of 1242221422 is 2241222421.

It is a super-3 number, since 3×1242221422³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1242221393 and 1242221402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242221423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278772 + ... + 283192.

It is an arithmetic number, because the mean of its divisors is an integer number (63935487).

Almost surely, 2^1242221422 is an apocalyptic number.

1242221422 is a deficient number, since it is larger than the sum of its proper divisors (803714162).

1242221422 is a wasteful number, since it uses less digits than its factorization.

1242221422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644.

The product of its digits is 1024, while the sum is 22.

The square root of 1242221422 is about 35245.1616821373. The cubic root of 1242221422 is about 1074.9782355788.

Adding to 1242221422 its reverse (2241222421), we get a palindrome (3483443843).

Subtracting 1242221422 from its reverse (2241222421), we obtain a palindrome (999000999).

The spelling of 1242221422 in words is "one billion, two hundred forty-two million, two hundred twenty-one thousand, four hundred twenty-two".