42450426 has 32 divisors (see below), whose sum is σ = 94691520. Its totient is φ = 14096592.

The previous prime is 42450391. The next prime is 42450451. The reversal of 42450426 is 62405424.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42450426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14481 + ... + 17163.

It is an arithmetic number, because the mean of its divisors is an integer number (2959110).

Almost surely, 2^42450426 is an apocalyptic number.

42450426 is an abundant number, since it is smaller than the sum of its proper divisors (52241094).

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

42450426 is a wasteful number, since it uses less digits than its factorization.

42450426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987 (or 2981 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 42450426 is about 6515.3991435675. The cubic root of 42450426 is about 348.8408619766.

The spelling of 42450426 in words is "forty-two million, four hundred fifty thousand, four hundred twenty-six".