1491020 has 12 divisors (see below), whose sum is σ = 3131184. Its totient is φ = 596400.

The previous prime is 1491013. The next prime is 1491031. The reversal of 1491020 is 201941.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1491020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37256 + ... + 37295.

It is an arithmetic number, because the mean of its divisors is an integer number (260932).

2^1491020 is an apocalyptic number.

1491020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1491020 is an abundant number, since it is smaller than the sum of its proper divisors (1640164).

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

1491020 is a wasteful number, since it uses less digits than its factorization.

1491020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74560 (or 74558 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1491020 is about 1221.0732983732. The cubic root of 1491020 is about 114.2425327936.

Adding to 1491020 its reverse (201941), we get a palindrome (1692961).

The spelling of 1491020 in words is "one million, four hundred ninety-one thousand, twenty".