42433820 has 96 divisors (see below), whose sum is σ = 107787456. Its totient is φ = 13824000.

The previous prime is 42433813. The next prime is 42433841. The reversal of 42433820 is 2833424.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 42433820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105620 + ... + 106020.

It is an arithmetic number, because the mean of its divisors is an integer number (1122786).

Almost surely, 2^42433820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42433820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53893728).

42433820 is an abundant number, since it is smaller than the sum of its proper divisors (65353636).

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

42433820 is a wasteful number, since it uses less digits than its factorization.

42433820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 42433820 is about 6514.1246533974. The cubic root of 42433820 is about 348.7953688574.

The spelling of 42433820 in words is "forty-two million, four hundred thirty-three thousand, eight hundred twenty".