42405027 has 16 divisors (see below), whose sum is σ = 64737792. Its totient is φ = 24186240.

The previous prime is 42405023. The next prime is 42405049. The reversal of 42405027 is 72050424.

It is not a de Polignac number, because 42405027 - 2² = 42405023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42404988 and 42405006.

It is not an unprimeable number, because it can be changed into a prime (42405023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12027 + ... + 15147.

It is an arithmetic number, because the mean of its divisors is an integer number (4046112).

Almost surely, 2^42405027 is an apocalyptic number.

42405027 is a deficient number, since it is larger than the sum of its proper divisors (22332765).

42405027 is a wasteful number, since it uses less digits than its factorization.

42405027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 42405027 is about 6511.9142346932. The cubic root of 42405027 is about 348.7164605919.

The spelling of 42405027 in words is "forty-two million, four hundred five thousand, twenty-seven".