64542042 has 16 divisors (see below), whose sum is σ = 143426880. Its totient is φ = 21513996.

The previous prime is 64542029. The next prime is 64542059. The reversal of 64542042 is 24024546.

64542042 is a `hidden beast` number, since 6 + 454 + 204 + 2 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 64541997 and 64542015.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597558 + ... + 597665.

It is an arithmetic number, because the mean of its divisors is an integer number (8964180).

Almost surely, 2^64542042 is an apocalyptic number.

64542042 is an abundant number, since it is smaller than the sum of its proper divisors (78884838).

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

64542042 is a wasteful number, since it uses less digits than its factorization.

64542042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195234 (or 1195228 counting only the distinct ones).

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

The square root of 64542042 is about 8033.8061963182. The cubic root of 64542042 is about 401.1260810455.

Adding to 64542042 its reverse (24024546), we get a palindrome (88566588).

The spelling of 64542042 in words is "sixty-four million, five hundred forty-two thousand, forty-two".