42650261 has 2 divisors, whose sum is σ = 42650262. Its totient is φ = 42650260.

The previous prime is 42650249. The next prime is 42650273. The reversal of 42650261 is 16205624.

It is a balanced prime because it is at equal distance from previous prime (42650249) and next prime (42650273).

It can be written as a sum of positive squares in only one way, i.e., 38626225 + 4024036 = 6215^2 + 2006^2 .

It is a cyclic number.

It is not a de Polignac number, because 42650261 - 2¹⁸ = 42388117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42650261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42656261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21325130 + 21325131.

It is an arithmetic number, because the mean of its divisors is an integer number (21325131).

Almost surely, 2^42650261 is an apocalyptic number.

It is an amenable number.

42650261 is a deficient number, since it is larger than the sum of its proper divisors (1).

42650261 is an equidigital number, since it uses as much as digits as its factorization.

42650261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42650261 is about 6530.7167294256. The cubic root of 42650261 is about 349.3873936846.

Adding to 42650261 its reverse (16205624), we get a palindrome (58855885).

The spelling of 42650261 in words is "forty-two million, six hundred fifty thousand, two hundred sixty-one".