1272020 has 12 divisors (see below), whose sum is σ = 2671284. Its totient is φ = 508800.

The previous prime is 1272001. The next prime is 1272043. The reversal of 1272020 is 202721.

It can be written as a sum of positive squares in 2 ways, for example, as 839056 + 432964 = 916^2 + 658^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1271986 and 1272004.

It is a congruent number.

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, 31781 + ... + 31820.

It is an arithmetic number, because the mean of its divisors is an integer number (222607).

2^1272020 is an apocalyptic number.

1272020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272020 is an abundant number, since it is smaller than the sum of its proper divisors (1399264).

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

1272020 is a wasteful number, since it uses less digits than its factorization.

1272020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63610 (or 63608 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 1272020 is about 1127.8386409412. The cubic root of 1272020 is about 108.3505981688.

Adding to 1272020 its reverse (202721), we get a palindrome (1474741).

The spelling of 1272020 in words is "one million, two hundred seventy-two thousand, twenty".