1242142411 has 4 divisors (see below), whose sum is σ = 1247614632. Its totient is φ = 1236670192.

The previous prime is 1242142409. The next prime is 1242142427. The reversal of 1242142411 is 1142412421.

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 1242142411 - 2¹ = 1242142409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242142211) 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, 2735770 + ... + 2736223.

It is an arithmetic number, because the mean of its divisors is an integer number (311903658).

Almost surely, 2^1242142411 is an apocalyptic number.

1242142411 is a deficient number, since it is larger than the sum of its proper divisors (5472221).

1242142411 is an equidigital number, since it uses as much as digits as its factorization.

1242142411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5472220.

The product of its digits is 512, while the sum is 22.

The square root of 1242142411 is about 35244.0407870607. The cubic root of 1242142411 is about 1074.9554439077.

Adding to 1242142411 its reverse (1142412421), we get a palindrome (2384554832).

The spelling of 1242142411 in words is "one billion, two hundred forty-two million, one hundred forty-two thousand, four hundred eleven".