42994247 has 2 divisors, whose sum is σ = 42994248. Its totient is φ = 42994246.

The previous prime is 42994223. The next prime is 42994271. The reversal of 42994247 is 74249924.

It is a balanced prime because it is at equal distance from previous prime (42994223) and next prime (42994271).

It is a cyclic number.

It is not a de Polignac number, because 42994247 - 2¹⁴ = 42977863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42994277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21497123 + 21497124.

It is an arithmetic number, because the mean of its divisors is an integer number (21497124).

Almost surely, 2^42994247 is an apocalyptic number.

42994247 is a deficient number, since it is larger than the sum of its proper divisors (1).

42994247 is an equidigital number, since it uses as much as digits as its factorization.

42994247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 42994247 is about 6556.9998474912. Note that the first 3 decimals coincide. The cubic root of 42994247 is about 350.3241812728.

The spelling of 42994247 in words is "forty-two million, nine hundred ninety-four thousand, two hundred forty-seven".