42561070 has 16 divisors (see below), whose sum is σ = 76684608. Its totient is φ = 17007840.

The previous prime is 42561061. The next prime is 42561073. The reversal of 42561070 is 7016524.

42561070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42561070² = 3622889359089800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42561073) 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 7 ways as a sum of consecutive naturals, for example, 17467 + ... + 19753.

It is an arithmetic number, because the mean of its divisors is an integer number (4792788).

Almost surely, 2^42561070 is an apocalyptic number.

42561070 is a deficient number, since it is larger than the sum of its proper divisors (34123538).

42561070 is a wasteful number, since it uses less digits than its factorization.

42561070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4155.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 42561070 is about 6523.8845789913. The cubic root of 42561070 is about 349.1436752962.

Adding to 42561070 its reverse (7016524), we get a palindrome (49577594).

The spelling of 42561070 in words is "forty-two million, five hundred sixty-one thousand, seventy".