42530061 has 8 divisors (see below), whose sum is σ = 64807744. Its totient is φ = 24302880.

The previous prime is 42530051. The next prime is 42530077. The reversal of 42530061 is 16003524.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42530061 - 2⁷ = 42529933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2025241 = 42530061 / (4 + 2 + 5 + 3 + 0 + 0 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42530021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012600 + ... + 1012641.

It is an arithmetic number, because the mean of its divisors is an integer number (8100968).

Almost surely, 2^42530061 is an apocalyptic number.

It is an amenable number.

42530061 is a deficient number, since it is larger than the sum of its proper divisors (22277683).

42530061 is a wasteful number, since it uses less digits than its factorization.

42530061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025251.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 42530061 is about 6521.5075711065. The cubic root of 42530061 is about 349.0588620570.

Adding to 42530061 its reverse (16003524), we get a palindrome (58533585).

The spelling of 42530061 in words is "forty-two million, five hundred thirty thousand, sixty-one".