22001242 has 8 divisors (see below), whose sum is σ = 33022836. Its totient is φ = 10993632.

The previous prime is 22001237. The next prime is 22001261. The reversal of 22001242 is 24210022.

It can be written as a sum of positive squares in 2 ways, for example, as 15452761 + 6548481 = 3931^2 + 2559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2488 + ... + 7084.

Almost surely, 2^22001242 is an apocalyptic number.

22001242 is a deficient number, since it is larger than the sum of its proper divisors (11021594).

22001242 is a wasteful number, since it uses less digits than its factorization.

22001242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6992.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22001242 is about 4690.5481555997. The cubic root of 22001242 is about 280.2092058949.

Adding to 22001242 its reverse (24210022), we get a palindrome (46211264).

The spelling of 22001242 in words is "twenty-two million, one thousand, two hundred forty-two".