1241440155 has 32 divisors (see below), whose sum is σ = 2214043200. Its totient is φ = 659990016.

The previous prime is 1241440141. The next prime is 1241440177. The reversal of 1241440155 is 5510441421.

It is not a de Polignac number, because 1241440155 - 2⁴ = 1241440139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28291 + ... + 57299.

It is an arithmetic number, because the mean of its divisors is an integer number (69188850).

Almost surely, 2^1241440155 is an apocalyptic number.

1241440155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1241440155 is a deficient number, since it is larger than the sum of its proper divisors (972603045).

1241440155 is a wasteful number, since it uses less digits than its factorization.

1241440155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29340 (or 29334 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1241440155 is about 35234.0766162532. The cubic root of 1241440155 is about 1074.7528272539.

Adding to 1241440155 its reverse (5510441421), we get a palindrome (6751881576).

The spelling of 1241440155 in words is "one billion, two hundred forty-one million, four hundred forty thousand, one hundred fifty-five".