1272705 has 64 divisors (see below), whose sum is σ = 2654208. Its totient is φ = 506880.

The previous prime is 1272679. The next prime is 1272749. The reversal of 1272705 is 5072721.

It is not a de Polignac number, because 1272705 - 2⁵ = 1272673 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41040 + ... + 41070.

It is an arithmetic number, because the mean of its divisors is an integer number (41472).

2^1272705 is an apocalyptic number.

1272705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1272705 is an abundant number, since it is smaller than the sum of its proper divisors (1381503).

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

1272705 is a wasteful number, since it uses less digits than its factorization.

1272705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 1272705 is about 1128.1422782610. The cubic root of 1272705 is about 108.3700441002.

The spelling of 1272705 in words is "one million, two hundred seventy-two thousand, seven hundred five".