42323040 has 192 divisors, whose sum is σ = 151139520. Its totient is φ = 11059200.

The previous prime is 42323033. The next prime is 42323053. The reversal of 42323040 is 4032324.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 418990 + ... + 419090.

It is an arithmetic number, because the mean of its divisors is an integer number (787185).

Almost surely, 2^42323040 is an apocalyptic number.

42323040 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 42323040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75569760).

42323040 is an abundant number, since it is smaller than the sum of its proper divisors (108816480).

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

42323040 is a wasteful number, since it uses less digits than its factorization.

42323040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 42323040 is about 6505.6160353959. The cubic root of 42323040 is about 348.4915763899.

Adding to 42323040 its reverse (4032324), we get a palindrome (46355364).

The spelling of 42323040 in words is "forty-two million, three hundred twenty-three thousand, forty".