40012101 has 24 divisors (see below), whose sum is σ = 61813440. Its totient is φ = 24852096.

The previous prime is 40012097. The next prime is 40012109. The reversal of 40012101 is 10121004.

It is a happy number.

It is not a de Polignac number, because 40012101 - 2² = 40012097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40012109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14490 + ... + 17028.

It is an arithmetic number, because the mean of its divisors is an integer number (2575560).

Almost surely, 2^40012101 is an apocalyptic number.

It is an amenable number.

40012101 is a deficient number, since it is larger than the sum of its proper divisors (21801339).

40012101 is a wasteful number, since it uses less digits than its factorization.

40012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665 (or 2662 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 40012101 is about 6325.5119160428. The cubic root of 40012101 is about 342.0296732230.

Adding to 40012101 its reverse (10121004), we get a palindrome (50133105).

The spelling of 40012101 in words is "forty million, twelve thousand, one hundred one".