42736340 has 12 divisors (see below), whose sum is σ = 89746356. Its totient is φ = 17094528.

The previous prime is 42736333. The next prime is 42736349. The reversal of 42736340 is 4363724.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5550736 + 37185604 = 2356^2 + 6098^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42736349) 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, 1068389 + ... + 1068428.

It is an arithmetic number, because the mean of its divisors is an integer number (7478863).

Almost surely, 2^42736340 is an apocalyptic number.

It is an amenable number.

42736340 is an abundant number, since it is smaller than the sum of its proper divisors (47010016).

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

42736340 is a wasteful number, since it uses less digits than its factorization.

42736340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136826 (or 2136824 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 42736340 is about 6537.3037255431. The cubic root of 42736340 is about 349.6222864026.

The spelling of 42736340 in words is "forty-two million, seven hundred thirty-six thousand, three hundred forty".