40124666 has 4 divisors (see below), whose sum is σ = 60187002. Its totient is φ = 20062332.

The previous prime is 40124621. The next prime is 40124681. The reversal of 40124666 is 66642104.

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

It can be written as a sum of positive squares in only one way, i.e., 31685641 + 8439025 = 5629^2 + 2905^2 .

It is a super-2 number, since 2×40124666² = 3219977643223112, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10031165 + ... + 10031168.

Almost surely, 2^40124666 is an apocalyptic number.

40124666 is a deficient number, since it is larger than the sum of its proper divisors (20062336).

40124666 is a wasteful number, since it uses less digits than its factorization.

40124666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20062335.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 40124666 is about 6334.4033657480. The cubic root of 40124666 is about 342.3501139673.

The spelling of 40124666 in words is "forty million, one hundred twenty-four thousand, six hundred sixty-six".