40743247 has 2 divisors, whose sum is σ = 40743248. Its totient is φ = 40743246.

The previous prime is 40743233. The next prime is 40743257. The reversal of 40743247 is 74234704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40743247 - 2⁷ = 40743119 is a prime.

It is a super-2 number, since 2×40743247² = 3320024352206018, 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 (40743257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20371623 + 20371624.

It is an arithmetic number, because the mean of its divisors is an integer number (20371624).

Almost surely, 2^40743247 is an apocalyptic number.

40743247 is a deficient number, since it is larger than the sum of its proper divisors (1).

40743247 is an equidigital number, since it uses as much as digits as its factorization.

40743247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 40743247 is about 6383.0437097046. The cubic root of 40743247 is about 344.1004275694.

The spelling of 40743247 in words is "forty million, seven hundred forty-three thousand, two hundred forty-seven".