42534261 has 64 divisors (see below), whose sum is σ = 80640000. Its totient is φ = 21513600.

The previous prime is 42534251. The next prime is 42534269. The reversal of 42534261 is 16243524.

It is not a de Polignac number, because 42534261 - 2¹⁰ = 42533237 is a prime.

It is a super-2 number, since 2×42534261² = 3618326717632242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42534269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84990 + ... + 85488.

It is an arithmetic number, because the mean of its divisors is an integer number (1260000).

Almost surely, 2^42534261 is an apocalyptic number.

42534261 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42534261 is a deficient number, since it is larger than the sum of its proper divisors (38105739).

42534261 is a wasteful number, since it uses less digits than its factorization.

42534261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 561 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 42534261 is about 6521.8295745902. The cubic root of 42534261 is about 349.0703519611.

Adding to 42534261 its reverse (16243524), we get a palindrome (58777785).

The spelling of 42534261 in words is "forty-two million, five hundred thirty-four thousand, two hundred sixty-one".