40424737 has 4 divisors (see below), whose sum is σ = 40658580. Its totient is φ = 40190896.

The previous prime is 40424711. The next prime is 40424803. The reversal of 40424737 is 73742404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34621456 + 5803281 = 5884^2 + 2409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40424737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40424699 and 40424708.

It is not an unprimeable number, because it can be changed into a prime (40422737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116662 + ... + 117007.

It is an arithmetic number, because the mean of its divisors is an integer number (10164645).

Almost surely, 2^40424737 is an apocalyptic number.

It is an amenable number.

40424737 is a deficient number, since it is larger than the sum of its proper divisors (233843).

40424737 is a wasteful number, since it uses less digits than its factorization.

40424737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233842.

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

The square root of 40424737 is about 6358.0450611804. The cubic root of 40424737 is about 343.2014133794.

The spelling of 40424737 in words is "forty million, four hundred twenty-four thousand, seven hundred thirty-seven".