1242012022 has 4 divisors (see below), whose sum is σ = 1863018036. Its totient is φ = 621006010.

The previous prime is 1242012001. The next prime is 1242012053. The reversal of 1242012022 is 2202102421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2202102421 = 47 ⋅46853243.

It is a junction number, because it is equal to n+sod(n) for n = 1242011987 and 1242012005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310503004 + ... + 310503007.

It is an arithmetic number, because the mean of its divisors is an integer number (465754509).

Almost surely, 2^1242012022 is an apocalyptic number.

1242012022 is a deficient number, since it is larger than the sum of its proper divisors (621006014).

1242012022 is an equidigital number, since it uses as much as digits as its factorization.

1242012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621006013.

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

The square root of 1242012022 is about 35242.1909364330. The cubic root of 1242012022 is about 1074.9178295224.

Adding to 1242012022 its reverse (2202102421), we get a palindrome (3444114443).

It can be divided in two parts, 12420 and 12022, that added together give a palindrome (24442).

The spelling of 1242012022 in words is "one billion, two hundred forty-two million, twelve thousand, twenty-two".