42438798 has 24 divisors (see below), whose sum is σ = 93460536. Its totient is φ = 13914000.

The previous prime is 42438793. The next prime is 42438833. The reversal of 42438798 is 89783424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42438793) 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, 18228 + ... + 20423.

It is an arithmetic number, because the mean of its divisors is an integer number (3894189).

Almost surely, 2^42438798 is an apocalyptic number.

42438798 is an abundant number, since it is smaller than the sum of its proper divisors (51021738).

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

42438798 is a wasteful number, since it uses less digits than its factorization.

42438798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38720 (or 38717 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 42438798 is about 6514.5067349723. The cubic root of 42438798 is about 348.8090076283.

It can be divided in two parts, 4243 and 8798, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 42438798 in words is "forty-two million, four hundred thirty-eight thousand, seven hundred ninety-eight".