42730038 has 32 divisors (see below), whose sum is σ = 102261600. Its totient is φ = 13147488.

The previous prime is 42730019. The next prime is 42730049. The reversal of 42730038 is 83003724.

It is a super-2 number, since 2×42730038² = 3651712294962888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 42729993 and 42730020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29733 + ... + 31136.

It is an arithmetic number, because the mean of its divisors is an integer number (3195675).

Almost surely, 2^42730038 is an apocalyptic number.

42730038 is an abundant number, since it is smaller than the sum of its proper divisors (59531562).

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

42730038 is a wasteful number, since it uses less digits than its factorization.

42730038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60893 (or 60887 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 42730038 is about 6536.8217047737. The cubic root of 42730038 is about 349.6051001862.

The spelling of 42730038 in words is "forty-two million, seven hundred thirty thousand, thirty-eight".