42417261 has 24 divisors (see below), whose sum is σ = 65505024. Its totient is φ = 26355840.

The previous prime is 42417251. The next prime is 42417337. The reversal of 42417261 is 16271424.

It is not a de Polignac number, because 42417261 - 2⁵ = 42417229 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42417251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15076 + ... + 17666.

It is an arithmetic number, because the mean of its divisors is an integer number (2729376).

Almost surely, 2^42417261 is an apocalyptic number.

It is an amenable number.

42417261 is a deficient number, since it is larger than the sum of its proper divisors (23087763).

42417261 is a wasteful number, since it uses less digits than its factorization.

42417261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2718 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 42417261 is about 6512.8535220746. The cubic root of 42417261 is about 348.7499926774.

Adding to 42417261 its reverse (16271424), we get a palindrome (58688685).

The spelling of 42417261 in words is "forty-two million, four hundred seventeen thousand, two hundred sixty-one".