42084605 has 8 divisors (see below), whose sum is σ = 53472312. Its totient is φ = 31687168.

The previous prime is 42084589. The next prime is 42084607. The reversal of 42084605 is 50648024.

It can be written as a sum of positive squares in 4 ways, for example, as 3171961 + 38912644 = 1781^2 + 6238^2 .

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 42084605 - 2⁴ = 42084589 is a prime.

It is a super-2 number, since 2×42084605² = 3542227956012050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42084607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247472 + ... + 247641.

It is an arithmetic number, because the mean of its divisors is an integer number (6684039).

Almost surely, 2^42084605 is an apocalyptic number.

It is an amenable number.

42084605 is a deficient number, since it is larger than the sum of its proper divisors (11387707).

42084605 is a wasteful number, since it uses less digits than its factorization.

42084605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495135.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 42084605 is about 6487.2648319612. The cubic root of 42084605 is about 347.8359120945.

The spelling of 42084605 in words is "forty-two million, eighty-four thousand, six hundred five".