1241504155 has 4 divisors (see below), whose sum is σ = 1489804992. Its totient is φ = 993203320.

The previous prime is 1241504153. The next prime is 1241504183. The reversal of 1241504155 is 5514051421.

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

It is not a de Polignac number, because 1241504155 - 2¹ = 1241504153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241504153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124150411 + ... + 124150420.

It is an arithmetic number, because the mean of its divisors is an integer number (372451248).

Almost surely, 2^1241504155 is an apocalyptic number.

1241504155 is a deficient number, since it is larger than the sum of its proper divisors (248300837).

1241504155 is an equidigital number, since it uses as much as digits as its factorization.

1241504155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248300836.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1241504155 is about 35234.9848162306. The cubic root of 1241504155 is about 1074.7712958576.

Adding to 1241504155 its reverse (5514051421), we get a palindrome (6755555576).

The spelling of 1241504155 in words is "one billion, two hundred forty-one million, five hundred four thousand, one hundred fifty-five".