42403400 has 96 divisors (see below), whose sum is σ = 108743040. Its totient is φ = 15279360.

The previous prime is 42403399. The next prime is 42403409. The reversal of 42403400 is 430424.

It is not an unprimeable number, because it can be changed into a prime (42403409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122027 + ... + 122373.

It is an arithmetic number, because the mean of its divisors is an integer number (1132740).

Almost surely, 2^42403400 is an apocalyptic number.

42403400 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 42403400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54371520).

42403400 is an abundant number, since it is smaller than the sum of its proper divisors (66339640).

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

42403400 is a wasteful number, since it uses less digits than its factorization.

42403400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42403400 is about 6511.7893086309. The cubic root of 42403400 is about 348.7120006730.

Adding to 42403400 its reverse (430424), we get a palindrome (42833824).

The spelling of 42403400 in words is "forty-two million, four hundred three thousand, four hundred".