42363840 has 56 divisors (see below), whose sum is σ = 134508240. Its totient is φ = 11296768.

The previous prime is 42363823. The next prime is 42363857. The reversal of 42363840 is 4836324.

It is an interprime number because it is at equal distance from previous prime (42363823) and next prime (42363857).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 42363798 and 42363807.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21105 + ... + 23024.

Almost surely, 2^42363840 is an apocalyptic number.

42363840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42363840 is an abundant number, since it is smaller than the sum of its proper divisors (92144400).

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

42363840 is a wasteful number, since it uses less digits than its factorization.

42363840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44149 (or 44139 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 42363840 is about 6508.7510322642. The cubic root of 42363840 is about 348.6035240023.

The spelling of 42363840 in words is "forty-two million, three hundred sixty-three thousand, eight hundred forty".