40120105 has 8 divisors (see below), whose sum is σ = 48186432. Its totient is φ = 32067888.

The previous prime is 40120081. The next prime is 40120109. The reversal of 40120105 is 50102104.

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 40120105 - 2⁷ = 40119977 is a prime.

It is a super-2 number, since 2×40120105² = 3219245650422050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40120109) 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, 4324 + ... + 9946.

It is an arithmetic number, because the mean of its divisors is an integer number (6023304).

Almost surely, 2^40120105 is an apocalyptic number.

It is an amenable number.

40120105 is a deficient number, since it is larger than the sum of its proper divisors (8066327).

40120105 is a wasteful number, since it uses less digits than its factorization.

40120105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 40120105 is about 6334.0433373952. The cubic root of 40120105 is about 342.3371417469.

Adding to 40120105 its reverse (50102104), we get a palindrome (90222209).

The spelling of 40120105 in words is "forty million, one hundred twenty thousand, one hundred five".