42246240 has 96 divisors (see below), whose sum is σ = 133975296. Its totient is φ = 11189760.

The previous prime is 42246233. The next prime is 42246257. The reversal of 42246240 is 4264224.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 42246240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135685 + ... + 135995.

It is an arithmetic number, because the mean of its divisors is an integer number (1395576).

Almost surely, 2^42246240 is an apocalyptic number.

42246240 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 42246240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66987648).

42246240 is an abundant number, since it is smaller than the sum of its proper divisors (91729056).

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

42246240 is a wasteful number, since it uses less digits than its factorization.

42246240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 42246240 is about 6499.7107627955. The cubic root of 42246240 is about 348.2806561419.

It can be divided in two parts, 42246 and 240, that added together give a triangular number (42486 = T₂₉₁).

The spelling of 42246240 in words is "forty-two million, two hundred forty-six thousand, two hundred forty".