40102343 has 2 divisors, whose sum is σ = 40102344. Its totient is φ = 40102342.

The previous prime is 40102319. The next prime is 40102351. The reversal of 40102343 is 34320104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40102343 - 2¹⁰ = 40101319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40102393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20051171 + 20051172.

It is an arithmetic number, because the mean of its divisors is an integer number (20051172).

Almost surely, 2^40102343 is an apocalyptic number.

40102343 is a deficient number, since it is larger than the sum of its proper divisors (1).

40102343 is an equidigital number, since it uses as much as digits as its factorization.

40102343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40102343 is about 6332.6410762019. The cubic root of 40102343 is about 342.2866143794.

Adding to 40102343 its reverse (34320104), we get a palindrome (74422447).

The spelling of 40102343 in words is "forty million, one hundred two thousand, three hundred forty-three".