1043121155 has 16 divisors (see below), whose sum is σ = 1298812320. Its totient is φ = 803292672.

The previous prime is 1043121127. The next prime is 1043121161. The reversal of 1043121155 is 5511213401.

It is a cyclic number.

It is not a de Polignac number, because 1043121155 - 2⁶ = 1043121091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1043121155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38192 + ... + 59538.

It is an arithmetic number, because the mean of its divisors is an integer number (81175770).

Almost surely, 2^1043121155 is an apocalyptic number.

1043121155 is a deficient number, since it is larger than the sum of its proper divisors (255691165).

1043121155 is a wasteful number, since it uses less digits than its factorization.

1043121155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21718.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1043121155 is about 32297.3861945514. The cubic root of 1043121155 is about 1014.1719260652.

Adding to 1043121155 its reverse (5511213401), we get a palindrome (6554334556).

The spelling of 1043121155 in words is "one billion, forty-three million, one hundred twenty-one thousand, one hundred fifty-five".