1042231121 has 8 divisors (see below), whose sum is σ = 1117509120. Its totient is φ = 968505408.

The previous prime is 1042231103. The next prime is 1042231139. The reversal of 1042231121 is 1211322401.

It is an interprime number because it is at equal distance from previous prime (1042231103) and next prime (1042231139).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042231121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1042231121.

It is not an unprimeable number, because it can be changed into a prime (1042230121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386681 + ... + 389366.

It is an arithmetic number, because the mean of its divisors is an integer number (139688640).

Almost surely, 2^1042231121 is an apocalyptic number.

It is an amenable number.

1042231121 is a deficient number, since it is larger than the sum of its proper divisors (75277999).

1042231121 is an equidigital number, since it uses as much as digits as its factorization.

1042231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776143.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1042231121 is about 32283.6045230392. The cubic root of 1042231121 is about 1013.8833995475.

Adding to 1042231121 its reverse (1211322401), we get a palindrome (2253553522).

The spelling of 1042231121 in words is "one billion, forty-two million, two hundred thirty-one thousand, one hundred twenty-one".