1061261145 has 24 divisors (see below), whose sum is σ = 2102308416. Its totient is φ = 485147808.

The previous prime is 1061261141. The next prime is 1061261167. The reversal of 1061261145 is 5411621601.

1061261145 is a `hidden beast` number, since 1 + 0 + 6 + 1 + 2 + 611 + 45 = 666.

It is not a de Polignac number, because 1061261145 - 2² = 1061261141 is a prime.

It is a super-2 number, since 2×1061261145² = 2252550435773422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061261141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1684227 + ... + 1684856.

It is an arithmetic number, because the mean of its divisors is an integer number (87596184).

Almost surely, 2^1061261145 is an apocalyptic number.

1061261145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1061261145 is a deficient number, since it is larger than the sum of its proper divisors (1041047271).

1061261145 is a wasteful number, since it uses less digits than its factorization.

1061261145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369101 (or 3369098 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1061261145 is about 32577.0033152222. The cubic root of 1061261145 is about 1020.0170268207.

Adding to 1061261145 its reverse (5411621601), we get a palindrome (6472882746).

The spelling of 1061261145 in words is "one billion, sixty-one million, two hundred sixty-one thousand, one hundred forty-five".