1271420 has 24 divisors (see below), whose sum is σ = 2694048. Its totient is φ = 504000.

The previous prime is 1271419. The next prime is 1271429. The reversal of 1271420 is 241721.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2810 + ... + 3230.

It is an arithmetic number, because the mean of its divisors is an integer number (112252).

2^1271420 is an apocalyptic number.

1271420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1271420 is an abundant number, since it is smaller than the sum of its proper divisors (1422628).

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

1271420 is a wasteful number, since it uses less digits than its factorization.

1271420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1271420 is about 1127.5726140697. The cubic root of 1271420 is about 108.3335594999. Note that the first 3 decimals are identical.

The spelling of 1271420 in words is "one million, two hundred seventy-one thousand, four hundred twenty".