1026121273 has 4 divisors (see below), whose sum is σ = 1026237328. Its totient is φ = 1026005220.

The previous prime is 1026121267. The next prime is 1026121279. The reversal of 1026121273 is 3721216201.

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 an interprime number because it is at equal distance from previous prime (1026121267) and next prime (1026121279).

It is a cyclic number.

It is not a de Polignac number, because 1026121273 - 2⁹ = 1026120761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1026121279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43563 + ... + 62848.

It is an arithmetic number, because the mean of its divisors is an integer number (256559332).

Almost surely, 2^1026121273 is an apocalyptic number.

It is an amenable number.

1026121273 is a deficient number, since it is larger than the sum of its proper divisors (116055).

1026121273 is an equidigital number, since it uses as much as digits as its factorization.

1026121273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116054.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1026121273 is about 32033.1277430100. The cubic root of 1026121273 is about 1008.6323589579.

Adding to 1026121273 its reverse (3721216201), we get a palindrome (4747337474).

The spelling of 1026121273 in words is "one billion, twenty-six million, one hundred twenty-one thousand, two hundred seventy-three".