1270420 has 12 divisors (see below), whose sum is σ = 2667924. Its totient is φ = 508160.

The previous prime is 1270417. The next prime is 1270421. The reversal of 1270420 is 240721.

It can be written as a sum of positive squares in 2 ways, for example, as 633616 + 636804 = 796^2 + 798^2 .

It is a super-2 number, since 2×1270420² = 3227933952800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1270394 and 1270403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31741 + ... + 31780.

It is an arithmetic number, because the mean of its divisors is an integer number (222327).

2^1270420 is an apocalyptic number.

1270420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1270420 is an abundant number, since it is smaller than the sum of its proper divisors (1397504).

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

1270420 is a wasteful number, since it uses less digits than its factorization.

1270420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63530 (or 63528 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 1270420 is about 1127.1290964215. The cubic root of 1270420 is about 108.3051498020.

The spelling of 1270420 in words is "one million, two hundred seventy thousand, four hundred twenty".