40743405 has 40 divisors (see below), whose sum is σ = 75576600. Its totient is φ = 20974464.

The previous prime is 40743397. The next prime is 40743431. The reversal of 40743405 is 50434704.

It can be written as a sum of positive squares in 4 ways, for example, as 26244 + 40717161 = 162^2 + 6381^2 .

It is not a de Polignac number, because 40743405 - 2³ = 40743397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10011 + ... + 13479.

It is an arithmetic number, because the mean of its divisors is an integer number (1889415).

Almost surely, 2^40743405 is an apocalyptic number.

40743405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40743405 is a deficient number, since it is larger than the sum of its proper divisors (34833195).

40743405 is a wasteful number, since it uses less digits than its factorization.

40743405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515 (or 3506 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 40743405 is about 6383.0560862333. The cubic root of 40743405 is about 344.1008723694.

The spelling of 40743405 in words is "forty million, seven hundred forty-three thousand, four hundred five".