1272015 has 24 divisors (see below), whose sum is σ = 2302560. Its totient is φ = 648384.

The previous prime is 1272001. The next prime is 1272043. The reversal of 1272015 is 5102721.

It is not a de Polignac number, because 1272015 - 2⁴ = 1271999 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 421 + ... + 1649.

It is an arithmetic number, because the mean of its divisors is an integer number (95940).

2^1272015 is an apocalyptic number.

1272015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1272015 is a deficient number, since it is larger than the sum of its proper divisors (1030545).

1272015 is a wasteful number, since it uses less digits than its factorization.

1272015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263 (or 1260 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 1272015 is about 1127.8364243098. The cubic root of 1272015 is about 108.3504562021.

Adding to 1272015 its reverse (5102721), we get a palindrome (6374736).

It can be divided in two parts, 12 and 72015, that added together give a palindrome (72027).

The spelling of 1272015 in words is "one million, two hundred seventy-two thousand, fifteen".