1273530 has 16 divisors (see below), whose sum is σ = 3056544. Its totient is φ = 339600.

The previous prime is 1273507. The next prime is 1273541. The reversal of 1273530 is 353721.

It is a happy number.

It is a super-3 number, since 3×1273530³ = 6196533393047931000, which contains 333 as substring.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1273497 and 1273506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21196 + ... + 21255.

It is an arithmetic number, because the mean of its divisors is an integer number (191034).

2^1273530 is an apocalyptic number.

1273530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1273530 is an abundant number, since it is smaller than the sum of its proper divisors (1783014).

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

1273530 is a wasteful number, since it uses less digits than its factorization.

1273530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42461.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 1273530 is about 1128.5078643944. The cubic root of 1273530 is about 108.3934551224.

The spelling of 1273530 in words is "one million, two hundred seventy-three thousand, five hundred thirty".