65142405 has 12 divisors (see below), whose sum is σ = 112913580. Its totient is φ = 34742592.

The previous prime is 65142401. The next prime is 65142421. The reversal of 65142405 is 50424156.

65142405 is a `hidden beast` number, since 651 + 4 + 2 + 4 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51236964 + 13905441 = 7158^2 + 3729^2 .

It is not a de Polignac number, because 65142405 - 2² = 65142401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65142401) 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, 723760 + ... + 723849.

It is an arithmetic number, because the mean of its divisors is an integer number (9409465).

Almost surely, 2^65142405 is an apocalyptic number.

It is an amenable number.

65142405 is a deficient number, since it is larger than the sum of its proper divisors (47771175).

65142405 is a wasteful number, since it uses less digits than its factorization.

65142405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447620 (or 1447617 counting only the distinct ones).

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

The square root of 65142405 is about 8071.0844996196. The cubic root of 65142405 is about 402.3659880749.

It can be divided in two parts, 6514240 and 5, that added together give a triangular number (6514245 = T₃₆₀₉).

The spelling of 65142405 in words is "sixty-five million, one hundred forty-two thousand, four hundred five".