1101403421 has 4 divisors (see below), whose sum is σ = 1101578844. Its totient is φ = 1101228000.

The previous prime is 1101403403. The next prime is 1101403439. The reversal of 1101403421 is 1243041011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1101403403) and next prime (1101403439).

It can be written as a sum of positive squares in 2 ways, for example, as 966588100 + 134815321 = 31090^2 + 11611^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101403421 - 2⁶ = 1101403357 is a prime.

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 1101403421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101405421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77930 + ... + 90971.

It is an arithmetic number, because the mean of its divisors is an integer number (275394711).

Almost surely, 2^1101403421 is an apocalyptic number.

It is an amenable number.

1101403421 is a deficient number, since it is larger than the sum of its proper divisors (175423).

1101403421 is an equidigital number, since it uses as much as digits as its factorization.

1101403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175422.

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

The square root of 1101403421 is about 33187.3985271518. The cubic root of 1101403421 is about 1032.7189360371.

Adding to 1101403421 its reverse (1243041011), we get a palindrome (2344444432).

The spelling of 1101403421 in words is "one billion, one hundred one million, four hundred three thousand, four hundred twenty-one".