42730434 has 12 divisors (see below), whose sum is σ = 92582646. Its totient is φ = 14243472.

The previous prime is 42730403. The next prime is 42730459. The reversal of 42730434 is 43403724.

It can be written as a sum of positive squares in only one way, i.e., 39501225 + 3229209 = 6285^2 + 1797^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42730398 and 42730407.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1186939 + ... + 1186974.

Almost surely, 2^42730434 is an apocalyptic number.

42730434 is an abundant number, since it is smaller than the sum of its proper divisors (49852212).

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

42730434 is a wasteful number, since it uses less digits than its factorization.

42730434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373921 (or 2373918 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 42730434 is about 6536.8519946531. The cubic root of 42730434 is about 349.6061801696.

The spelling of 42730434 in words is "forty-two million, seven hundred thirty thousand, four hundred thirty-four".