1020140463 has 4 divisors (see below), whose sum is σ = 1360187288. Its totient is φ = 680093640.

The previous prime is 1020140423. The next prime is 1020140491. The reversal of 1020140463 is 3640410201.

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

It is not a de Polignac number, because 1020140463 - 2⁶ = 1020140399 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 (1020140423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170023408 + ... + 170023413.

It is an arithmetic number, because the mean of its divisors is an integer number (340046822).

Almost surely, 2^1020140463 is an apocalyptic number.

1020140463 is a deficient number, since it is larger than the sum of its proper divisors (340046825).

1020140463 is an equidigital number, since it uses as much as digits as its factorization.

1020140463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340046824.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1020140463 is about 31939.6378032062. The cubic root of 1020140463 is about 1006.6689143823.

Adding to 1020140463 its reverse (3640410201), we get a palindrome (4660550664).

The spelling of 1020140463 in words is "one billion, twenty million, one hundred forty thousand, four hundred sixty-three".