42532261 has 2 divisors, whose sum is σ = 42532262. Its totient is φ = 42532260.

The previous prime is 42532253. The next prime is 42532327. The reversal of 42532261 is 16223524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31708161 + 10824100 = 5631^2 + 3290^2 .

It is a cyclic number.

It is not a de Polignac number, because 42532261 - 2³ = 42532253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42532561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21266130 + 21266131.

It is an arithmetic number, because the mean of its divisors is an integer number (21266131).

Almost surely, 2^42532261 is an apocalyptic number.

It is an amenable number.

42532261 is a deficient number, since it is larger than the sum of its proper divisors (1).

42532261 is an equidigital number, since it uses as much as digits as its factorization.

42532261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 42532261 is about 6521.6762415808. The cubic root of 42532261 is about 349.0648806725.

Adding to 42532261 its reverse (16223524), we get a palindrome (58755785).

The spelling of 42532261 in words is "forty-two million, five hundred thirty-two thousand, two hundred sixty-one".