42064546 has 4 divisors (see below), whose sum is σ = 63096822. Its totient is φ = 21032272.

The previous prime is 42064531. The next prime is 42064553. The reversal of 42064546 is 64546024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24750625 + 17313921 = 4975^2 + 4161^2 .

It is a super-2 number, since 2×42064546² = 3538852060372232, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 10516135 + ... + 10516138.

Almost surely, 2^42064546 is an apocalyptic number.

42064546 is a deficient number, since it is larger than the sum of its proper divisors (21032276).

42064546 is a wasteful number, since it uses less digits than its factorization.

42064546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032275.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 42064546 is about 6485.7186186266. The cubic root of 42064546 is about 347.7806397102.

The spelling of 42064546 in words is "forty-two million, sixty-four thousand, five hundred forty-six".