42783400 has 48 divisors (see below), whose sum is σ = 108519840. Its totient is φ = 15556800.

The previous prime is 42783361. The next prime is 42783401. The reversal of 42783400 is 438724.

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (42783401) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 7524 + ... + 11923.

It is an arithmetic number, because the mean of its divisors is an integer number (2260830).

Almost surely, 2^42783400 is an apocalyptic number.

42783400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42783400 is an abundant number, since it is smaller than the sum of its proper divisors (65736440).

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

42783400 is a wasteful number, since it uses less digits than its factorization.

42783400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19474 (or 19465 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 42783400 is about 6540.9020784598. The cubic root of 42783400 is about 349.7505705843.

The spelling of 42783400 in words is "forty-two million, seven hundred eighty-three thousand, four hundred".