42578430 has 32 divisors (see below), whose sum is σ = 107568000. Its totient is φ = 10756512.

The previous prime is 42578383. The next prime is 42578443. The reversal of 42578430 is 3487524.

It is a junction number, because it is equal to n+sod(n) for n = 42578391 and 42578400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36780 + ... + 37919.

It is an arithmetic number, because the mean of its divisors is an integer number (3361500).

Almost surely, 2^42578430 is an apocalyptic number.

42578430 is an abundant number, since it is smaller than the sum of its proper divisors (64989570).

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

42578430 is a wasteful number, since it uses less digits than its factorization.

42578430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74728.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 42578430 is about 6525.2149389886. The cubic root of 42578430 is about 349.1911389393.

The spelling of 42578430 in words is "forty-two million, five hundred seventy-eight thousand, four hundred thirty".