1020279 has 8 divisors (see below), whose sum is σ = 1465072. Its totient is φ = 627840.

The previous prime is 1020269. The next prime is 1020293. The reversal of 1020279 is 9720201.

It is a happy number.

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

It is not a de Polignac number, because 1020279 - 2⁵ = 1020247 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 (1020259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13042 + ... + 13119.

It is an arithmetic number, because the mean of its divisors is an integer number (183134).

2^1020279 is an apocalyptic number.

1020279 is a deficient number, since it is larger than the sum of its proper divisors (444793).

1020279 is a wasteful number, since it uses less digits than its factorization.

1020279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26177.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1020279 is about 1010.0886099744. The cubic root of 1020279 is about 100.6714481499.

The spelling of 1020279 in words is "one million, twenty thousand, two hundred seventy-nine".