42332240 has 20 divisors (see below), whose sum is σ = 98422644. Its totient is φ = 16932864.

The previous prime is 42332239. The next prime is 42332273. The reversal of 42332240 is 4223324.

It can be written as a sum of positive squares in 2 ways, for example, as 24960016 + 17372224 = 4996^2 + 4168^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264497 + ... + 264656.

Almost surely, 2^42332240 is an apocalyptic number.

42332240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42332240 is an abundant number, since it is smaller than the sum of its proper divisors (56090404).

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

42332240 is a wasteful number, since it uses less digits than its factorization.

42332240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529166 (or 529160 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 42332240 is about 6506.3230783600. The cubic root of 42332240 is about 348.5168257594.

Adding to 42332240 its reverse (4223324), we get a palindrome (46555564).

The spelling of 42332240 in words is "forty-two million, three hundred thirty-two thousand, two hundred forty".