1042401121 has 8 divisors (see below), whose sum is σ = 1104001704. Its totient is φ = 980832000.

The previous prime is 1042401083. The next prime is 1042401131. The reversal of 1042401121 is 1211042401.

It is a happy number.

1042401121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 216413521 + 825987600 = 14711^2 + 28740^2 .

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

It is not a de Polignac number, because 1042401121 - 2¹³ = 1042392929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1042401095 and 1042401104.

It is not an unprimeable number, because it can be changed into a prime (1042401131) 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, 118371 + ... + 126871.

It is an arithmetic number, because the mean of its divisors is an integer number (138000213).

Almost surely, 2^1042401121 is an apocalyptic number.

It is an amenable number.

1042401121 is a deficient number, since it is larger than the sum of its proper divisors (61600583).

1042401121 is an equidigital number, since it uses as much as digits as its factorization.

1042401121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15731.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1042401121 is about 32286.2373310982. The cubic root of 1042401121 is about 1013.9385219364.

Adding to 1042401121 its reverse (1211042401), we get a palindrome (2253443522).

The spelling of 1042401121 in words is "one billion, forty-two million, four hundred one thousand, one hundred twenty-one".