1242021341 has 8 divisors (see below), whose sum is σ = 1368348768. Its totient is φ = 1117930000.

The previous prime is 1242021299. The next prime is 1242021371. The reversal of 1242021341 is 1431202421.

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

It is not a de Polignac number, because 1242021341 - 2²² = 1237827037 is a prime.

It is a super-2 number, since 2×1242021341² = 3085234022998876562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242021371) 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, 557855 + ... + 560076.

It is an arithmetic number, because the mean of its divisors is an integer number (171043596).

Almost surely, 2^1242021341 is an apocalyptic number.

1242021341 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1242021341 is a deficient number, since it is larger than the sum of its proper divisors (126327427).

1242021341 is a wasteful number, since it uses less digits than its factorization.

1242021341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118043.

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

The square root of 1242021341 is about 35242.3231498719. The cubic root of 1242021341 is about 1074.9205179382.

Adding to 1242021341 its reverse (1431202421), we get a palindrome (2673223762).

The spelling of 1242021341 in words is "one billion, two hundred forty-two million, twenty-one thousand, three hundred forty-one".