1272042 has 24 divisors (see below), whose sum is σ = 2918916. Its totient is φ = 398976.

The previous prime is 1272001. The next prime is 1272043. The reversal of 1272042 is 2402721.

It can be written as a sum of positive squares in 2 ways, for example, as 1252161 + 19881 = 1119^2 + 141^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1272043) 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 11 ways as a sum of consecutive naturals, for example, 1773 + ... + 2384.

2^1272042 is an apocalyptic number.

1272042 is an abundant number, since it is smaller than the sum of its proper divisors (1646874).

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

1272042 is a wasteful number, since it uses less digits than its factorization.

1272042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182 (or 4179 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 1272042 is about 1127.8483940672. The cubic root of 1272042 is about 108.3512228182.

Adding to 1272042 its reverse (2402721), we get a palindrome (3674763).

The spelling of 1272042 in words is "one million, two hundred seventy-two thousand, forty-two".