1242455050019 has 4 divisors (see below), whose sum is σ = 1242457441296. Its totient is φ = 1242452658744.

The previous prime is 1242455050013. The next prime is 1242455050021. The reversal of 1242455050019 is 9100505542421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1242455050019 - 2⁸ = 1242455049763 is a prime.

It is a super-2 number, since 2×1242455050019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242455050013) 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, 50999 + ... + 1577184.

It is an arithmetic number, because the mean of its divisors is an integer number (310614360324).

Almost surely, 2^{1242455050019} is an apocalyptic number.

1242455050019 is a deficient number, since it is larger than the sum of its proper divisors (2391277).

1242455050019 is an equidigital number, since it uses as much as digits as its factorization.

1242455050019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391276.

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 1242455050019 in words is "one trillion, two hundred forty-two billion, four hundred fifty-five million, fifty thousand, nineteen".