40346543 has 2 divisors, whose sum is σ = 40346544. Its totient is φ = 40346542.

The previous prime is 40346521. The next prime is 40346561. The reversal of 40346543 is 34564304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40346543 - 2⁶ = 40346479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40340543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20173271 + 20173272.

It is an arithmetic number, because the mean of its divisors is an integer number (20173272).

Almost surely, 2^40346543 is an apocalyptic number.

40346543 is a deficient number, since it is larger than the sum of its proper divisors (1).

40346543 is an equidigital number, since it uses as much as digits as its factorization.

40346543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 40346543 is about 6351.8928674845. The cubic root of 40346543 is about 342.9799844956.

It can be divided in two parts, 403465 and 43, that multiplied together give a triangular number (17348995 = T₅₈₉₀).

The spelling of 40346543 in words is "forty million, three hundred forty-six thousand, five hundred forty-three".