42322240 has 28 divisors (see below), whose sum is σ = 100780596. Its totient is φ = 16928768.

The previous prime is 42322237. The next prime is 42322243. The reversal of 42322240 is 4222324.

It is an interprime number because it is at equal distance from previous prime (42322237) and next prime (42322243).

It can be written as a sum of positive squares in 2 ways, for example, as 29419776 + 12902464 = 5424^2 + 3592^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42322243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65809 + ... + 66448.

It is an arithmetic number, because the mean of its divisors is an integer number (3599307).

Almost surely, 2^42322240 is an apocalyptic number.

42322240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42322240 is an abundant number, since it is smaller than the sum of its proper divisors (58458356).

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

42322240 is a wasteful number, since it uses less digits than its factorization.

42322240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132274 (or 132264 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 42322240 is about 6505.5545497675. The cubic root of 42322240 is about 348.4893806197.

Adding to 42322240 its reverse (4222324), we get a palindrome (46544564).

The spelling of 42322240 in words is "forty-two million, three hundred twenty-two thousand, two hundred forty".