42395400 has 120 divisors (see below), whose sum is σ = 147301770. Its totient is φ = 11301120.

The previous prime is 42395393. The next prime is 42395411. The reversal of 42395400 is 459324.

It can be written as a sum of positive squares in 3 ways, for example, as 40373316 + 2022084 = 6354^2 + 1422^2 .

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

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 29 ways as a sum of consecutive naturals, for example, 14892 + ... + 17508.

Almost surely, 2^42395400 is an apocalyptic number.

42395400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42395400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73650885).

42395400 is an abundant number, since it is smaller than the sum of its proper divisors (104906370).

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

42395400 is a wasteful number, since it uses less digits than its factorization.

42395400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645 (or 2627 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 42395400 is about 6511.1750091669. The cubic root of 42395400 is about 348.6900694799.

The spelling of 42395400 in words is "forty-two million, three hundred ninety-five thousand, four hundred".