42064551 has 12 divisors (see below), whose sum is σ = 62720320. Its totient is φ = 27138240.

The previous prime is 42064531. The next prime is 42064553. The reversal of 42064551 is 15546024.

42064551 is a `hidden beast` number, since 4 + 206 + 455 + 1 = 666.

42064551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42064551 - 2⁶ = 42064487 is a prime.

It is a super-4 number, since 4×42064551⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42064553) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 75106 + ... + 75663.

Almost surely, 2^42064551 is an apocalyptic number.

42064551 is a deficient number, since it is larger than the sum of its proper divisors (20655769).

42064551 is a wasteful number, since it uses less digits than its factorization.

42064551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150806 (or 150803 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 42064551 is about 6485.7190040889. The cubic root of 42064551 is about 347.7806534898.

The spelling of 42064551 in words is "forty-two million, sixty-four thousand, five hundred fifty-one".