1274155 has 4 divisors (see below), whose sum is σ = 1528992. Its totient is φ = 1019320.

The previous prime is 1274149. The next prime is 1274183. The reversal of 1274155 is 5514721.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1274155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 127411 + ... + 127420.

It is an arithmetic number, because the mean of its divisors is an integer number (382248).

2^1274155 is an apocalyptic number.

1274155 is a deficient number, since it is larger than the sum of its proper divisors (254837).

1274155 is an equidigital number, since it uses as much as digits as its factorization.

1274155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254836.

The product of its digits is 1400, while the sum is 25.

The square root of 1274155 is about 1128.7847447587. The cubic root of 1274155 is about 108.4111840151.

Adding to 1274155 its reverse (5514721), we get a palindrome (6788876).

The spelling of 1274155 in words is "one million, two hundred seventy-four thousand, one hundred fifty-five".