1020454423 has 4 divisors (see below), whose sum is σ = 1022727600. Its totient is φ = 1018181248.

The previous prime is 1020454417. The next prime is 1020454429. The reversal of 1020454423 is 3244540201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3244540201 = 7 ⋅463505743.

It is an interprime number because it is at equal distance from previous prime (1020454417) and next prime (1020454429).

It is a cyclic number.

It is not a de Polignac number, because 1020454423 - 2²¹ = 1018357271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020454429) 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, 1135915 + ... + 1136812.

It is an arithmetic number, because the mean of its divisors is an integer number (255681900).

Almost surely, 2^1020454423 is an apocalyptic number.

1020454423 is a deficient number, since it is larger than the sum of its proper divisors (2273177).

1020454423 is an equidigital number, since it uses as much as digits as its factorization.

1020454423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273176.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1020454423 is about 31944.5523211705. The cubic root of 1020454423 is about 1006.7721751149.

Adding to 1020454423 its reverse (3244540201), we get a palindrome (4264994624).

The spelling of 1020454423 in words is "one billion, twenty million, four hundred fifty-four thousand, four hundred twenty-three".