1273125 has 40 divisors (see below), whose sum is σ = 2449216. Its totient is φ = 576000.

The previous prime is 1273121. The next prime is 1273127. The reversal of 1273125 is 5213721.

It is not a de Polignac number, because 1273125 - 2² = 1273121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

1273125 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273121) 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 39 ways as a sum of consecutive naturals, for example, 13077 + ... + 13173.

2^1273125 is an apocalyptic number.

1273125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1273125 is a deficient number, since it is larger than the sum of its proper divisors (1176091).

1273125 is an frugal number, since it uses more digits than its factorization.

1273125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 112 counting only the distinct ones).

The product of its digits is 420, while the sum is 21.

The square root of 1273125 is about 1128.3284096397. The cubic root of 1273125 is about 108.3819637026.

Adding to 1273125 its reverse (5213721), we get a palindrome (6486846).

It can be divided in two parts, 12 and 73125, that added together give a palindrome (73137).

The spelling of 1273125 in words is "one million, two hundred seventy-three thousand, one hundred twenty-five".