42739650 has 120 divisors (see below), whose sum is σ = 121397364. Its totient is φ = 11145600.

The previous prime is 42739633. The next prime is 42739693. The reversal of 42739650 is 5693724.

It can be written as a sum of positive squares in 6 ways, for example, as 12895281 + 29844369 = 3591^2 + 5463^2 .

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 59 ways as a sum of consecutive naturals, for example, 246964 + ... + 247136.

Almost surely, 2^42739650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42739650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60698682).

42739650 is an abundant number, since it is smaller than the sum of its proper divisors (78657714).

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

42739650 is a wasteful number, since it uses less digits than its factorization.

42739650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 42739650 is about 6537.5568831177. The cubic root of 42739650 is about 349.6313124437.

The spelling of 42739650 in words is "forty-two million, seven hundred thirty-nine thousand, six hundred fifty".