1040421121 has 4 divisors (see below), whose sum is σ = 1045868544. Its totient is φ = 1034973700.

The previous prime is 1040421113. The next prime is 1040421157. The reversal of 1040421121 is 1211240401.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1040421121 - 2³ = 1040421113 is a prime.

It is a super-2 number, since 2×1040421121² = 2164952218045793282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1040421095 and 1040421104.

It is not an unprimeable number, because it can be changed into a prime (1040421181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2723425 + ... + 2723806.

It is an arithmetic number, because the mean of its divisors is an integer number (261467136).

Almost surely, 2^1040421121 is an apocalyptic number.

It is an amenable number.

1040421121 is a deficient number, since it is larger than the sum of its proper divisors (5447423).

1040421121 is an equidigital number, since it uses as much as digits as its factorization.

1040421121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447422.

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

The square root of 1040421121 is about 32255.5595363032. The cubic root of 1040421121 is about 1013.2961362322.

Adding to 1040421121 its reverse (1211240401), we get a palindrome (2251661522).

The spelling of 1040421121 in words is "one billion, forty million, four hundred twenty-one thousand, one hundred twenty-one".