1260020 has 18 divisors (see below), whose sum is σ = 2656626. Its totient is φ = 502000.

The previous prime is 1260019. The next prime is 1260031. The reversal of 1260020 is 200621.

It can be written as a sum of positive squares in only one way, i.e., 1008016 + 252004 = 1004^2 + 502^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1259983 and 1260010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4895 + ... + 5145.

2^1260020 is an apocalyptic number.

1260020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260020 is an abundant number, since it is smaller than the sum of its proper divisors (1396606).

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

1260020 is an equidigital number, since it uses as much as digits as its factorization.

1260020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1260020 is about 1122.5061247049. The cubic root of 1260020 is about 108.0088012946.

Adding to 1260020 its reverse (200621), we get a palindrome (1460641).

The spelling of 1260020 in words is "one million, two hundred sixty thousand, twenty".