1242230034421 has 4 divisors (see below), whose sum is σ = 1243298161152. Its totient is φ = 1241161907692.

The previous prime is 1242230034407. The next prime is 1242230034427. The reversal of 1242230034421 is 1244300322421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1242230034421 - 2¹⁷ = 1242229903349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242230034421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242230034427) 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, 534061621 + ... + 534063946.

It is an arithmetic number, because the mean of its divisors is an integer number (310824540288).

Almost surely, 2^{1242230034421} is an apocalyptic number.

It is an amenable number.

1242230034421 is a deficient number, since it is larger than the sum of its proper divisors (1068126731).

1242230034421 is a wasteful number, since it uses less digits than its factorization.

1242230034421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068126730.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1242230034421 its reverse (1244300322421), we get a palindrome (2486530356842).

The spelling of 1242230034421 in words is "one trillion, two hundred forty-two billion, two hundred thirty million, thirty-four thousand, four hundred twenty-one".