1273420 has 12 divisors (see below), whose sum is σ = 2674224. Its totient is φ = 509360.

The previous prime is 1273417. The next prime is 1273421. The reversal of 1273420 is 243721.

It is not an unprimeable number, because it can be changed into a prime (1273421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31816 + ... + 31855.

It is an arithmetic number, because the mean of its divisors is an integer number (222852).

2^1273420 is an apocalyptic number.

1273420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1273420 is an abundant number, since it is smaller than the sum of its proper divisors (1400804).

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

1273420 is a wasteful number, since it uses less digits than its factorization.

1273420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63680 (or 63678 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 1273420 is about 1128.4591264197. The cubic root of 1273420 is about 108.3903342371.

The spelling of 1273420 in words is "one million, two hundred seventy-three thousand, four hundred twenty".