42003320 has 16 divisors (see below), whose sum is σ = 94507560. Its totient is φ = 16801312.

The previous prime is 42003317. The next prime is 42003323. The reversal of 42003320 is 2330024.

It is an interprime number because it is at equal distance from previous prime (42003317) and next prime (42003323).

It is a junction number, because it is equal to n+sod(n) for n = 42003295 and 42003304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42003323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525002 + ... + 525081.

Almost surely, 2^42003320 is an apocalyptic number.

42003320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42003320 is an abundant number, since it is smaller than the sum of its proper divisors (52504240).

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

42003320 is a wasteful number, since it uses less digits than its factorization.

42003320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050094 (or 1050090 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 42003320 is about 6480.9968369071. The cubic root of 42003320 is about 347.6118233017.

Adding to 42003320 its reverse (2330024), we get a palindrome (44333344).

The spelling of 42003320 in words is "forty-two million, three thousand, three hundred twenty".