42390168 has 32 divisors (see below), whose sum is σ = 106144560. Its totient is φ = 14107520.

The previous prime is 42390149. The next prime is 42390169. The reversal of 42390168 is 86109324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42390169) by changing a digit.

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, 21646 + ... + 23522.

Almost surely, 2^42390168 is an apocalyptic number.

It is an amenable number.

42390168 is an abundant number, since it is smaller than the sum of its proper divisors (63754392).

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

42390168 is a wasteful number, since it uses less digits than its factorization.

42390168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827 (or 2823 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 42390168 is about 6510.7732259694. The cubic root of 42390168 is about 348.6757249874.

The spelling of 42390168 in words is "forty-two million, three hundred ninety thousand, one hundred sixty-eight".