1044121545 has 12 divisors (see below), whose sum is σ = 1809810756. Its totient is φ = 556864800.

The previous prime is 1044121543. The next prime is 1044121553. The reversal of 1044121545 is 5451214401.

1044121545 is a `hidden beast` number, since 1 + 0 + 441 + 215 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 289136016 + 754985529 = 17004^2 + 27477^2 .

It is not a de Polignac number, because 1044121545 - 2¹ = 1044121543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1044121541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11601306 + ... + 11601395.

It is an arithmetic number, because the mean of its divisors is an integer number (150817563).

Almost surely, 2^1044121545 is an apocalyptic number.

1044121545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1044121545 is a deficient number, since it is larger than the sum of its proper divisors (765689211).

1044121545 is a wasteful number, since it uses less digits than its factorization.

1044121545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23202712 (or 23202709 counting only the distinct ones).

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

The square root of 1044121545 is about 32312.8696497232. The cubic root of 1044121545 is about 1014.4960313671.

Adding to 1044121545 its reverse (5451214401), we get a palindrome (6495335946).

The spelling of 1044121545 in words is "one billion, forty-four million, one hundred twenty-one thousand, five hundred forty-five".