40020101 has 8 divisors (see below), whose sum is σ = 45067008. Its totient is φ = 35208000.

The previous prime is 40020089. The next prime is 40020103. The reversal of 40020101 is 10102004.

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 40020101 - 2⁶ = 40020037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40020103) 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, 58340 + ... + 59021.

It is an arithmetic number, because the mean of its divisors is an integer number (5633376).

Almost surely, 2^40020101 is an apocalyptic number.

It is an amenable number.

40020101 is a deficient number, since it is larger than the sum of its proper divisors (5046907).

40020101 is a wasteful number, since it uses less digits than its factorization.

40020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117403.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 40020101 is about 6326.1442443245. The cubic root of 40020101 is about 342.0524667861.

Adding to 40020101 its reverse (10102004), we get a palindrome (50122105).

The spelling of 40020101 in words is "forty million, twenty thousand, one hundred one".