40743149 has 2 divisors, whose sum is σ = 40743150. Its totient is φ = 40743148.

The previous prime is 40743133. The next prime is 40743161. The reversal of 40743149 is 94134704.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40729924 + 13225 = 6382^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 40743149 - 2⁴ = 40743133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40743119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20371574 + 20371575.

It is an arithmetic number, because the mean of its divisors is an integer number (20371575).

Almost surely, 2^40743149 is an apocalyptic number.

It is an amenable number.

40743149 is a deficient number, since it is larger than the sum of its proper divisors (1).

40743149 is an equidigital number, since it uses as much as digits as its factorization.

40743149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 40743149 is about 6383.0360331115. The cubic root of 40743149 is about 344.1001516801.

The spelling of 40743149 in words is "forty million, seven hundred forty-three thousand, one hundred forty-nine".