1042131121 has 4 divisors (see below), whose sum is σ = 1042196544. Its totient is φ = 1042065700.

The previous prime is 1042131119. The next prime is 1042131131. The reversal of 1042131121 is 1211312401.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1042131121 - 2¹ = 1042131119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1042131095 and 1042131104.

It is not an unprimeable number, because it can be changed into a prime (1042131131) 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, 8436 + ... + 46426.

It is an arithmetic number, because the mean of its divisors is an integer number (260549136).

Almost surely, 2^1042131121 is an apocalyptic number.

It is an amenable number.

1042131121 is a deficient number, since it is larger than the sum of its proper divisors (65423).

1042131121 is an equidigital number, since it uses as much as digits as its factorization.

1042131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65422.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1042131121 is about 32282.0557121135. The cubic root of 1042131121 is about 1013.8509718129.

Adding to 1042131121 its reverse (1211312401), we get a palindrome (2253443522).

The spelling of 1042131121 in words is "one billion, forty-two million, one hundred thirty-one thousand, one hundred twenty-one".