1020263 has 4 divisors (see below), whose sum is σ = 1025640. Its totient is φ = 1014888.

The previous prime is 1020259. The next prime is 1020269. The reversal of 1020263 is 3620201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020263 - 2² = 1020259 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 (1020269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2393 + ... + 2786.

It is an arithmetic number, because the mean of its divisors is an integer number (256410).

2^1020263 is an apocalyptic number.

1020263 is a deficient number, since it is larger than the sum of its proper divisors (5377).

1020263 is an equidigital number, since it uses as much as digits as its factorization.

1020263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5376.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1020263 is about 1010.0806898461. The cubic root of 1020263 is about 100.6709219044.

Adding to 1020263 its reverse (3620201), we get a palindrome (4640464).

The spelling of 1020263 in words is "one million, twenty thousand, two hundred sixty-three".