42235240 has 16 divisors (see below), whose sum is σ = 95029380. Its totient is φ = 16894080.

The previous prime is 42235231. The next prime is 42235267. The reversal of 42235240 is 4253224.

It can be written as a sum of positive squares in 2 ways, for example, as 42224004 + 11236 = 6498^2 + 106^2 .

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 3 ways as a sum of consecutive naturals, for example, 527901 + ... + 527980.

Almost surely, 2^42235240 is an apocalyptic number.

42235240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42235240 is an abundant number, since it is smaller than the sum of its proper divisors (52794140).

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

42235240 is a wasteful number, since it uses less digits than its factorization.

42235240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055892 (or 1055888 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42235240 is about 6498.8645162059. The cubic root of 42235240 is about 348.2504252876.

Adding to 42235240 its reverse (4253224), we get a palindrome (46488464).

The spelling of 42235240 in words is "forty-two million, two hundred thirty-five thousand, two hundred forty".