42705436 has 12 divisors (see below), whose sum is σ = 76557600. Its totient is φ = 20831840.

The previous prime is 42705431. The next prime is 42705461. The reversal of 42705436 is 63450724.

It is a junction number, because it is equal to n+sod(n) for n = 42705398 and 42705407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42705431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 130036 + ... + 130363.

It is an arithmetic number, because the mean of its divisors is an integer number (6379800).

Almost surely, 2^42705436 is an apocalyptic number.

It is an amenable number.

42705436 is a deficient number, since it is larger than the sum of its proper divisors (33852164).

42705436 is a wasteful number, since it uses less digits than its factorization.

42705436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260444 (or 260442 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 42705436 is about 6534.9396324679. The cubic root of 42705436 is about 349.5379917672.

The spelling of 42705436 in words is "forty-two million, seven hundred five thousand, four hundred thirty-six".