42266401 has 2 divisors, whose sum is σ = 42266402. Its totient is φ = 42266400.

The previous prime is 42266381. The next prime is 42266417. The reversal of 42266401 is 10466224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40768225 + 1498176 = 6385^2 + 1224^2 .

It is a cyclic number.

It is not a de Polignac number, because 42266401 - 2¹¹ = 42264353 is a prime.

It is a super-3 number, since 3×42266401³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (42266461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21133200 + 21133201.

It is an arithmetic number, because the mean of its divisors is an integer number (21133201).

Almost surely, 2^42266401 is an apocalyptic number.

It is an amenable number.

42266401 is a deficient number, since it is larger than the sum of its proper divisors (1).

42266401 is an equidigital number, since it uses as much as digits as its factorization.

42266401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 42266401 is about 6501.2614929720. The cubic root of 42266401 is about 348.3360501812.

The spelling of 42266401 in words is "forty-two million, two hundred sixty-six thousand, four hundred one".