42240650 has 36 divisors (see below), whose sum is σ = 82183542. Its totient is φ = 16151520.

The previous prime is 42240641. The next prime is 42240659. The reversal of 42240650 is 5604224.

It is an interprime number because it is at equal distance from previous prime (42240641) and next prime (42240659).

It can be written as a sum of positive squares in 3 ways, for example, as 24910081 + 17330569 = 4991^2 + 4163^2 .

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (42240659) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25652 + ... + 27248.

Almost surely, 2^42240650 is an apocalyptic number.

42240650 is a deficient number, since it is larger than the sum of its proper divisors (39942892).

42240650 is a wasteful number, since it uses less digits than its factorization.

42240650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655 (or 1627 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42240650 is about 6499.2807294346. The cubic root of 42240650 is about 348.2652940273.

Adding to 42240650 its reverse (5604224), we get a palindrome (47844874).

The spelling of 42240650 in words is "forty-two million, two hundred forty thousand, six hundred fifty".