42436261 has 16 divisors (see below), whose sum is σ = 49390848. Its totient is φ = 35712000.

The previous prime is 42436249. The next prime is 42436279. The reversal of 42436261 is 16263424.

It is a cyclic number.

It is not a de Polignac number, because 42436261 - 2¹¹ = 42434213 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 (42436211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136296 + ... + 136606.

It is an arithmetic number, because the mean of its divisors is an integer number (3086928).

Almost surely, 2^42436261 is an apocalyptic number.

It is an amenable number.

42436261 is a deficient number, since it is larger than the sum of its proper divisors (6954587).

42436261 is a wasteful number, since it uses less digits than its factorization.

42436261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

The product of its digits is 6912, while the sum is 28.

The square root of 42436261 is about 6514.3120127915. The cubic root of 42436261 is about 348.8020568653.

Adding to 42436261 its reverse (16263424), we get a palindrome (58699685).

The spelling of 42436261 in words is "forty-two million, four hundred thirty-six thousand, two hundred sixty-one".