42401178 has 16 divisors (see below), whose sum is σ = 94224960. Its totient is φ = 14133708.

The previous prime is 42401173. The next prime is 42401189. The reversal of 42401178 is 87110424.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42401173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392550 + ... + 392657.

It is an arithmetic number, because the mean of its divisors is an integer number (5889060).

Almost surely, 2^42401178 is an apocalyptic number.

42401178 is an abundant number, since it is smaller than the sum of its proper divisors (51823782).

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

42401178 is a wasteful number, since it uses less digits than its factorization.

42401178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785218 (or 785212 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 42401178 is about 6511.6186927676. The cubic root of 42401178 is about 348.7059095608.

The spelling of 42401178 in words is "forty-two million, four hundred one thousand, one hundred seventy-eight".