42024861 has 6 divisors (see below), whose sum is σ = 60702590. Its totient is φ = 28016568.

The previous prime is 42024847. The next prime is 42024881. The reversal of 42024861 is 16842024.

It can be written as a sum of positive squares in only one way, i.e., 38675961 + 3348900 = 6219^2 + 1830^2 .

It is not a de Polignac number, because 42024861 - 2⁷ = 42024733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42024811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2334706 + ... + 2334723.

Almost surely, 2^42024861 is an apocalyptic number.

It is an amenable number.

42024861 is a deficient number, since it is larger than the sum of its proper divisors (18677729).

42024861 is a wasteful number, since it uses less digits than its factorization.

42024861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4669435 (or 4669432 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 42024861 is about 6482.6584824438. The cubic root of 42024861 is about 347.6712362768.

Adding to 42024861 its reverse (16842024), we get a palindrome (58866885).

It can be divided in two parts, 420 and 24861, that added together give a square (25281 = 159²).

The spelling of 42024861 in words is "forty-two million, twenty-four thousand, eight hundred sixty-one".