1242210026 has 8 divisors (see below), whose sum is σ = 1972921860. Its totient is φ = 584569408.

The previous prime is 1242210023. The next prime is 1242210061. The reversal of 1242210026 is 6200122421.

It is a happy number.

It is a Cunningham number, because it is equal to 35245²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 1242210025 + 1 = 35245^2 + 1^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1242210023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18267761 + ... + 18267828.

Almost surely, 2^1242210026 is an apocalyptic number.

1242210026 is a deficient number, since it is larger than the sum of its proper divisors (730711834).

1242210026 is a wasteful number, since it uses less digits than its factorization.

1242210026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36535608.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1242210026 is about 35245.0000141864. Note that the first 4 decimals coincide. The cubic root of 1242210026 is about 1074.9749483255.

Adding to 1242210026 its reverse (6200122421), we get a palindrome (7442332447).

The spelling of 1242210026 in words is "one billion, two hundred forty-two million, two hundred ten thousand, twenty-six".