1042113221 has 8 divisors (see below), whose sum is σ = 1058762304. Its totient is φ = 1025519040.

The previous prime is 1042113211. The next prime is 1042113239. The reversal of 1042113221 is 1223112401.

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

It is a cyclic number.

It is not a de Polignac number, because 1042113221 - 2²⁶ = 975004357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1042113221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042113211) 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, 25421 + ... + 52253.

It is an arithmetic number, because the mean of its divisors is an integer number (132345288).

Almost surely, 2^1042113221 is an apocalyptic number.

It is an amenable number.

1042113221 is a deficient number, since it is larger than the sum of its proper divisors (16649083).

1042113221 is an equidigital number, since it uses as much as digits as its factorization.

1042113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27451.

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

The square root of 1042113221 is about 32281.7784671167. The cubic root of 1042113221 is about 1013.8451670295.

Adding to 1042113221 its reverse (1223112401), we get a palindrome (2265225622).

The spelling of 1042113221 in words is "one billion, forty-two million, one hundred thirteen thousand, two hundred twenty-one".