40230621 has 16 divisors (see below), whose sum is σ = 59704000. Its totient is φ = 26774064.

The previous prime is 40230613. The next prime is 40230629. The reversal of 40230621 is 12603204.

It is a happy number.

40230621 is a `hidden beast` number, since 40 + 2 + 3 + 0 + 621 = 666.

It is an interprime number because it is at equal distance from previous prime (40230613) and next prime (40230629).

It is not a de Polignac number, because 40230621 - 2³ = 40230613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40230594 and 40230603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40230629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22830 + ... + 24528.

It is an arithmetic number, because the mean of its divisors is an integer number (3731500).

Almost surely, 2^40230621 is an apocalyptic number.

It is an amenable number.

40230621 is a deficient number, since it is larger than the sum of its proper divisors (19473379).

40230621 is a wasteful number, since it uses less digits than its factorization.

40230621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585 (or 2579 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40230621 is about 6342.7613071911. The cubic root of 40230621 is about 342.6511908197.

Adding to 40230621 its reverse (12603204), we get a palindrome (52833825).

The spelling of 40230621 in words is "forty million, two hundred thirty thousand, six hundred twenty-one".