42122646 has 16 divisors (see below), whose sum is σ = 93606000. Its totient is φ = 14040864.

The previous prime is 42122627. The next prime is 42122681. The reversal of 42122646 is 64622124.

42122646 is a `hidden beast` number, since 4 + 2 + 12 + 2 + 646 = 666.

42122646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389971 + ... + 390078.

It is an arithmetic number, because the mean of its divisors is an integer number (5850375).

Almost surely, 2^42122646 is an apocalyptic number.

42122646 is an abundant number, since it is smaller than the sum of its proper divisors (51483354).

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

42122646 is a wasteful number, since it uses less digits than its factorization.

42122646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780060 (or 780054 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 42122646 is about 6490.1961449559. The cubic root of 42122646 is about 347.9406854912.

The spelling of 42122646 in words is "forty-two million, one hundred twenty-two thousand, six hundred forty-six".