42908400 has 240 divisors, whose sum is σ = 159141600. Its totient is φ = 10967040.

The previous prime is 42908377. The next prime is 42908407. The reversal of 42908400 is 480924.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×42908400² = 3682261581120000, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42908407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 313132 + ... + 313268.

It is an arithmetic number, because the mean of its divisors is an integer number (663090).

Almost surely, 2^42908400 is an apocalyptic number.

42908400 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 42908400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79570800).

42908400 is an abundant number, since it is smaller than the sum of its proper divisors (116233200).

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

42908400 is a wasteful number, since it uses less digits than its factorization.

42908400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 42908400 is about 6550.4503661962. The cubic root of 42908400 is about 350.0908607640.

The spelling of 42908400 in words is "forty-two million, nine hundred eight thousand, four hundred".