42575778 has 24 divisors (see below), whose sum is σ = 105426048. Its totient is φ = 12164472.

The previous prime is 42575777. The next prime is 42575779. The reversal of 42575778 is 87757524.

42575778 is a `hidden beast` number, since 4 + 2 + 575 + 7 + 78 = 666.

It is an interprime number because it is at equal distance from previous prime (42575777) and next prime (42575779).

It is not an unprimeable number, because it can be changed into a prime (42575773) 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, 168826 + ... + 169077.

It is an arithmetic number, because the mean of its divisors is an integer number (4392752).

Almost surely, 2^42575778 is an apocalyptic number.

42575778 is an abundant number, since it is smaller than the sum of its proper divisors (62850270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42575778 is a wasteful number, since it uses less digits than its factorization.

42575778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337918 (or 337915 counting only the distinct ones).

The product of its digits is 548800, while the sum is 45.

The square root of 42575778 is about 6525.0117241274. The cubic root of 42575778 is about 349.1838889919.

The spelling of 42575778 in words is "forty-two million, five hundred seventy-five thousand, seven hundred seventy-eight".