1272542 has 8 divisors (see below), whose sum is σ = 1953336. Its totient is φ = 621432.

The previous prime is 1272539. The next prime is 1272547. The reversal of 1272542 is 2452721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7313 + ... + 7484.

It is an arithmetic number, because the mean of its divisors is an integer number (244167).

2^1272542 is an apocalyptic number.

1272542 is a deficient number, since it is larger than the sum of its proper divisors (680794).

1272542 is a wasteful number, since it uses less digits than its factorization.

1272542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14842.

The product of its digits is 1120, while the sum is 23.

The square root of 1272542 is about 1128.0700332869. The cubic root of 1272542 is about 108.3654174529.

The spelling of 1272542 in words is "one million, two hundred seventy-two thousand, five hundred forty-two".