1042243511 has 4 divisors (see below), whose sum is σ = 1044843024. Its totient is φ = 1039644000.

The previous prime is 1042243483. The next prime is 1042243513. The reversal of 1042243511 is 1153422401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1153422401 = 2927 ⋅394063.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042243511 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 (1042243513) 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, 1299155 + ... + 1299956.

It is an arithmetic number, because the mean of its divisors is an integer number (261210756).

Almost surely, 2^1042243511 is an apocalyptic number.

1042243511 is a deficient number, since it is larger than the sum of its proper divisors (2599513).

1042243511 is an equidigital number, since it uses as much as digits as its factorization.

1042243511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599512.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1042243511 is about 32283.7964155395. The cubic root of 1042243511 is about 1013.8874171995.

Adding to 1042243511 its reverse (1153422401), we get a palindrome (2195665912).

The spelling of 1042243511 in words is "one billion, forty-two million, two hundred forty-three thousand, five hundred eleven".