1272487 has 4 divisors (see below), whose sum is σ = 1339480. Its totient is φ = 1205496.

The previous prime is 1272461. The next prime is 1272539. The reversal of 1272487 is 7842721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1272487 - 2¹⁹ = 748199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272287) 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, 33468 + ... + 33505.

It is an arithmetic number, because the mean of its divisors is an integer number (334870).

2^1272487 is an apocalyptic number.

1272487 is a deficient number, since it is larger than the sum of its proper divisors (66993).

1272487 is an equidigital number, since it uses as much as digits as its factorization.

1272487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66992.

The product of its digits is 6272, while the sum is 31.

The square root of 1272487 is about 1128.0456551044. The cubic root of 1272487 is about 108.3638562251.

The spelling of 1272487 in words is "one million, two hundred seventy-two thousand, four hundred eighty-seven".