42274247 has 2 divisors, whose sum is σ = 42274248. Its totient is φ = 42274246.

The previous prime is 42274217. The next prime is 42274261. The reversal of 42274247 is 74247224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42274247 - 2⁸ = 42273991 is a prime.

It is a super-2 number, since 2×42274247² = 3574223918834018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42274217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21137123 + 21137124.

It is an arithmetic number, because the mean of its divisors is an integer number (21137124).

Almost surely, 2^42274247 is an apocalyptic number.

42274247 is a deficient number, since it is larger than the sum of its proper divisors (1).

42274247 is an equidigital number, since it uses as much as digits as its factorization.

42274247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25088, while the sum is 32.

The square root of 42274247 is about 6501.8648863230. The cubic root of 42274247 is about 348.3576029630.

The spelling of 42274247 in words is "forty-two million, two hundred seventy-four thousand, two hundred forty-seven".