1120421253 has 8 divisors (see below), whose sum is σ = 1707308608. Its totient is φ = 640240704.

The previous prime is 1120421243. The next prime is 1120421257. The reversal of 1120421253 is 3521240211.

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

It is not a de Polignac number, because 1120421253 - 2¹⁴ = 1120404869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 53353393 = 1120421253 / (1 + 1 + 2 + 0 + 4 + 2 + 1 + 2 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120421257) 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 7 ways as a sum of consecutive naturals, for example, 26676676 + ... + 26676717.

It is an arithmetic number, because the mean of its divisors is an integer number (213413576).

Almost surely, 2^1120421253 is an apocalyptic number.

It is an amenable number.

1120421253 is a deficient number, since it is larger than the sum of its proper divisors (586887355).

1120421253 is an equidigital number, since it uses as much as digits as its factorization.

1120421253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53353403.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1120421253 is about 33472.6941401495. The cubic root of 1120421253 is about 1038.6290036762.

Adding to 1120421253 its reverse (3521240211), we get a palindrome (4641661464).

The spelling of 1120421253 in words is "one billion, one hundred twenty million, four hundred twenty-one thousand, two hundred fifty-three".