42418390 has 16 divisors (see below), whose sum is σ = 87260832. Its totient is φ = 14543424.

The previous prime is 42418373. The next prime is 42418403. The reversal of 42418390 is 9381424.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 302919 + ... + 303058.

It is an arithmetic number, because the mean of its divisors is an integer number (5453802).

Almost surely, 2^42418390 is an apocalyptic number.

42418390 is an abundant number, since it is smaller than the sum of its proper divisors (44842442).

42418390 is a wasteful number, since it uses less digits than its factorization.

42418390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605991.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 42418390 is about 6512.9401962555. The cubic root of 42418390 is about 348.7530868207.

The spelling of 42418390 in words is "forty-two million, four hundred eighteen thousand, three hundred ninety".