42007578 has 32 divisors (see below), whose sum is σ = 89346240. Its totient is φ = 13121280.

The previous prime is 42007577. The next prime is 42007579. The reversal of 42007578 is 87570024.

It is an interprime number because it is at equal distance from previous prime (42007577) and next prime (42007579).

It is not an unprimeable number, because it can be changed into a prime (42007571) 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, 26673 + ... + 28203.

It is an arithmetic number, because the mean of its divisors is an integer number (2792070).

Almost surely, 2^42007578 is an apocalyptic number.

42007578 is an abundant number, since it is smaller than the sum of its proper divisors (47338662).

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

42007578 is a wasteful number, since it uses less digits than its factorization.

42007578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 42007578 is about 6481.3253274311. The cubic root of 42007578 is about 347.6235690488.

The spelling of 42007578 in words is "forty-two million, seven thousand, five hundred seventy-eight".