42612247 has 2 divisors, whose sum is σ = 42612248. Its totient is φ = 42612246.

The previous prime is 42612239. The next prime is 42612289. The reversal of 42612247 is 74221624.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42612247 - 2³ = 42612239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42612347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21306123 + 21306124.

It is an arithmetic number, because the mean of its divisors is an integer number (21306124).

Almost surely, 2^42612247 is an apocalyptic number.

42612247 is a deficient number, since it is larger than the sum of its proper divisors (1).

42612247 is an equidigital number, since it uses as much as digits as its factorization.

42612247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 28.

The square root of 42612247 is about 6527.8056803186. The cubic root of 42612247 is about 349.2835603201.

The spelling of 42612247 in words is "forty-two million, six hundred twelve thousand, two hundred forty-seven".