1242020212 has 18 divisors (see below), whose sum is σ = 2181805458. Its totient is φ = 618656112.

The previous prime is 1242020203. The next prime is 1242020233. The reversal of 1242020212 is 2120202421.

It can be written as a sum of positive squares in only one way, i.e., 934158096 + 307862116 = 30564^2 + 17546^2 .

It is a super-2 number, since 2×1242020212² = 3085228414033049888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 318418 + ... + 322294.

Almost surely, 2^1242020212 is an apocalyptic number.

It is an amenable number.

1242020212 is a deficient number, since it is larger than the sum of its proper divisors (939785246).

1242020212 is an equidigital number, since it uses as much as digits as its factorization.

1242020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447 (or 4162 counting only the distinct ones).

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

The square root of 1242020212 is about 35242.3071321955. The cubic root of 1242020212 is about 1074.9201922364.

Adding to 1242020212 its reverse (2120202421), we get a palindrome (3362222633).

The spelling of 1242020212 in words is "one billion, two hundred forty-two million, twenty thousand, two hundred twelve".