1273290 has 16 divisors (see below), whose sum is σ = 3055968. Its totient is φ = 339536.

The previous prime is 1273289. The next prime is 1273291. The reversal of 1273290 is 923721.

It is an interprime number because it is at equal distance from previous prime (1273289) and next prime (1273291).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1273290.

It is not an unprimeable number, because it can be changed into a prime (1273291) 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, 21192 + ... + 21251.

It is an arithmetic number, because the mean of its divisors is an integer number (190998).

2^1273290 is an apocalyptic number.

1273290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1273290 is an abundant number, since it is smaller than the sum of its proper divisors (1782678).

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

1273290 is a wasteful number, since it uses less digits than its factorization.

1273290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42453.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1273290 is about 1128.4015242811. The cubic root of 1273290 is about 108.3866456863.

The spelling of 1273290 in words is "one million, two hundred seventy-three thousand, two hundred ninety".