1242342132511 has 4 divisors (see below), whose sum is σ = 1248585058000. Its totient is φ = 1236099207024.

The previous prime is 1242342132509. The next prime is 1242342132529. The reversal of 1242342132511 is 1152312432421.

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 1242342132511 - 2¹ = 1242342132509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242342132211) 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, 3121462446 + ... + 3121462843.

It is an arithmetic number, because the mean of its divisors is an integer number (312146264500).

Almost surely, 2^{1242342132511} is an apocalyptic number.

1242342132511 is a deficient number, since it is larger than the sum of its proper divisors (6242925489).

1242342132511 is an equidigital number, since it uses as much as digits as its factorization.

1242342132511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6242925488.

The product of its digits is 11520, while the sum is 31.

Adding to 1242342132511 its reverse (1152312432421), we get a palindrome (2394654564932).

The spelling of 1242342132511 in words is "one trillion, two hundred forty-two billion, three hundred forty-two million, one hundred thirty-two thousand, five hundred eleven".