42098400 has 144 divisors (see below), whose sum is σ = 152334000. Its totient is φ = 11220480.

The previous prime is 42098393. The next prime is 42098437. The reversal of 42098400 is 489024.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 20626 + ... + 22574.

It is an arithmetic number, because the mean of its divisors is an integer number (1057875).

Almost surely, 2^42098400 is an apocalyptic number.

42098400 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 42098400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76167000).

42098400 is an abundant number, since it is smaller than the sum of its proper divisors (110235600).

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

42098400 is a wasteful number, since it uses less digits than its factorization.

42098400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978 (or 1959 counting only the distinct ones).

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

The square root of 42098400 is about 6488.3279818456. The cubic root of 42098400 is about 347.8739138944.

The spelling of 42098400 in words is "forty-two million, ninety-eight thousand, four hundred".