1065240405 has 24 divisors (see below), whose sum is σ = 1848394080. Its totient is φ = 567519840.

The previous prime is 1065240373. The next prime is 1065240409. The reversal of 1065240405 is 5040425601.

1065240405 is a `hidden beast` number, since 1 + 0 + 652 + 4 + 0 + 4 + 0 + 5 = 666.

It is not a de Polignac number, because 1065240405 - 2⁵ = 1065240373 is a prime.

It is a super-2 number, since 2×1065240405² = 2269474240889128050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065240409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31506 + ... + 55884.

It is an arithmetic number, because the mean of its divisors is an integer number (77016420).

Almost surely, 2^1065240405 is an apocalyptic number.

1065240405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1065240405 is a deficient number, since it is larger than the sum of its proper divisors (783153675).

1065240405 is a wasteful number, since it uses less digits than its factorization.

1065240405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25361 (or 25358 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1065240405 is about 32638.0208499229. The cubic root of 1065240405 is about 1021.2903076626.

The spelling of 1065240405 in words is "one billion, sixty-five million, two hundred forty thousand, four hundred five".