40601021 has 8 divisors (see below), whose sum is σ = 41490360. Its totient is φ = 39716352.

The previous prime is 40601017. The next prime is 40601039. The reversal of 40601021 is 12010604.

It can be written as a sum of positive squares in 4 ways, for example, as 7365796 + 33235225 = 2714^2 + 5765^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40601021 - 2² = 40601017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40600987 and 40601005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40601221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20741 + ... + 22613.

It is an arithmetic number, because the mean of its divisors is an integer number (5186295).

Almost surely, 2^40601021 is an apocalyptic number.

It is an amenable number.

40601021 is a deficient number, since it is larger than the sum of its proper divisors (889339).

40601021 is a wasteful number, since it uses less digits than its factorization.

40601021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2335.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 40601021 is about 6371.8930468111. The cubic root of 40601021 is about 343.6995669923.

Adding to 40601021 its reverse (12010604), we get a palindrome (52611625).

The spelling of 40601021 in words is "forty million, six hundred one thousand, twenty-one".