405142005 has 8 divisors (see below), whose sum is σ = 648227232. Its totient is φ = 216075728.

The previous prime is 405141949. The next prime is 405142009. The reversal of 405142005 is 500241504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405142005 - 2²³ = 396753397 is a prime.

It is a super-5 number, since 5×405142005⁵ (a number of 44 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405142009) 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 7 ways as a sum of consecutive naturals, for example, 13504719 + ... + 13504748.

It is an arithmetic number, because the mean of its divisors is an integer number (81028404).

Almost surely, 2^405142005 is an apocalyptic number.

It is an amenable number.

405142005 is a deficient number, since it is larger than the sum of its proper divisors (243085227).

405142005 is a wasteful number, since it uses less digits than its factorization.

405142005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27009475.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 405142005 is about 20128.1396308750. The cubic root of 405142005 is about 739.9500848971.

Adding to 405142005 its reverse (500241504), we get a palindrome (905383509).

It can be divided in two parts, 4051 and 42005, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 405142005 in words is "four hundred five million, one hundred forty-two thousand, five".