42240258 has 32 divisors (see below), whose sum is σ = 95644800. Its totient is φ = 13813488.

The previous prime is 42240221. The next prime is 42240271. The reversal of 42240258 is 85204224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4518 + ... + 10241.

It is an arithmetic number, because the mean of its divisors is an integer number (2988900).

Almost surely, 2^42240258 is an apocalyptic number.

42240258 is an abundant number, since it is smaller than the sum of its proper divisors (53404542).

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

42240258 is a wasteful number, since it uses less digits than its factorization.

42240258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14823 (or 14817 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 42240258 is about 6499.2505721814. The cubic root of 42240258 is about 348.2642167047.

The spelling of 42240258 in words is "forty-two million, two hundred forty thousand, two hundred fifty-eight".