1234155 has 16 divisors (see below), whose sum is σ = 2126880. Its totient is φ = 607488.

The previous prime is 1234147. The next prime is 1234187. The reversal of 1234155 is 5514321.

It is not a de Polignac number, because 1234155 - 2³ = 1234147 is a prime.

1234155 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2970 + ... + 3359.

It is an arithmetic number, because the mean of its divisors is an integer number (132930).

2^1234155 is an apocalyptic number.

1234155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1234155 is a deficient number, since it is larger than the sum of its proper divisors (892725).

1234155 is a wasteful number, since it uses less digits than its factorization.

1234155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6350.

The product of its digits is 600, while the sum is 21.

The square root of 1234155 is about 1110.9252900173. The cubic root of 1234155 is about 107.2646374032.

Adding to 1234155 its reverse (5514321), we get a palindrome (6748476).

It can be divided in two parts, 123 and 4155, that added together give a triangular number (4278 = T₉₂).

The spelling of 1234155 in words is "one million, two hundred thirty-four thousand, one hundred fifty-five".