42501378 has 32 divisors (see below), whose sum is σ = 89413632. Its totient is φ = 13442000.

The previous prime is 42501367. The next prime is 42501409. The reversal of 42501378 is 87310524.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16903 + ... + 19253.

It is an arithmetic number, because the mean of its divisors is an integer number (2794176).

Almost surely, 2^42501378 is an apocalyptic number.

42501378 is an abundant number, since it is smaller than the sum of its proper divisors (46912254).

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

42501378 is a wasteful number, since it uses less digits than its factorization.

42501378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 42501378 is about 6519.3080921214. The cubic root of 42501378 is about 348.9803739891.

The spelling of 42501378 in words is "forty-two million, five hundred one thousand, three hundred seventy-eight".