1242020213 has 8 divisors (see below), whose sum is σ = 1452462528. Its totient is φ = 1039830624.

The previous prime is 1242020203. The next prime is 1242020233. The reversal of 1242020213 is 3120202421.

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

It is not a de Polignac number, because 1242020213 - 2⁸ = 1242019957 is a prime.

It is a super-2 number, since 2×1242020213² = 3085228419001130738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242020191 and 1242020200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242020203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2062856 + ... + 2063457.

It is an arithmetic number, because the mean of its divisors is an integer number (181557816).

Almost surely, 2^1242020213 is an apocalyptic number.

It is an amenable number.

1242020213 is a deficient number, since it is larger than the sum of its proper divisors (210442315).

1242020213 is an equidigital number, since it uses as much as digits as its factorization.

1242020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126363.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1242020213 is about 35242.3071463830. The cubic root of 1242020213 is about 1074.9201925249.

Adding to 1242020213 its reverse (3120202421), we get a palindrome (4362222634).

The spelling of 1242020213 in words is "one billion, two hundred forty-two million, twenty thousand, two hundred thirteen".