1017420 has 48 divisors (see below), whose sum is σ = 2946048. Its totient is φ = 262080.

The previous prime is 1017391. The next prime is 1017437. The reversal of 1017420 is 247101.

1017420 = T₆₁ + T₆₂ + ... + T₁₈₄.

1017420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1017420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1587 + ... + 2133.

It is an arithmetic number, because the mean of its divisors is an integer number (61376).

2^1017420 is an apocalyptic number.

1017420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1017420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1473024).

1017420 is an abundant number, since it is smaller than the sum of its proper divisors (1928628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1017420 is a wasteful number, since it uses less digits than its factorization.

1017420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 1017420 is about 1008.6723947844. The cubic root of 1017420 is about 100.5773271856.

The spelling of 1017420 in words is "one million, seventeen thousand, four hundred twenty".