42550730 has 8 divisors (see below), whose sum is σ = 76591332. Its totient is φ = 17020288.

The previous prime is 42550727. The next prime is 42550763. The reversal of 42550730 is 3705524.

It can be written as a sum of positive squares in 2 ways, for example, as 42393121 + 157609 = 6511^2 + 397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42550730.

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 3 ways as a sum of consecutive naturals, for example, 2127527 + ... + 2127546.

Almost surely, 2^42550730 is an apocalyptic number.

42550730 is a deficient number, since it is larger than the sum of its proper divisors (34040602).

42550730 is a wasteful number, since it uses less digits than its factorization.

42550730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4255080.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 42550730 is about 6523.0920582190. The cubic root of 42550730 is about 349.1153987671.

The spelling of 42550730 in words is "forty-two million, five hundred fifty thousand, seven hundred thirty".