42657061 has 4 divisors (see below), whose sum is σ = 42943500. Its totient is φ = 42370624.

The previous prime is 42657049. The next prime is 42657073. The reversal of 42657061 is 16075624.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (42657049) and next prime (42657073).

It can be written as a sum of positive squares in 2 ways, for example, as 28026436 + 14630625 = 5294^2 + 3825^2 .

It is a cyclic number.

It is not a de Polignac number, because 42657061 - 2¹¹ = 42655013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42657031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142996 + ... + 143293.

It is an arithmetic number, because the mean of its divisors is an integer number (10735875).

Almost surely, 2^42657061 is an apocalyptic number.

It is an amenable number.

42657061 is a deficient number, since it is larger than the sum of its proper divisors (286439).

42657061 is a wasteful number, since it uses less digits than its factorization.

42657061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286438.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 42657061 is about 6531.2373253466. The cubic root of 42657061 is about 349.4059610428.

The spelling of 42657061 in words is "forty-two million, six hundred fifty-seven thousand, sixty-one".