40210105 has 16 divisors (see below), whose sum is σ = 52383744. Its totient is φ = 29453760.

The previous prime is 40210103. The next prime is 40210109. The reversal of 40210105 is 50101204.

It is not a de Polignac number, because 40210105 - 2¹ = 40210103 is a prime.

It is a super-2 number, since 2×40210105² = 3233705088222050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40210103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5820 + ... + 10690.

It is an arithmetic number, because the mean of its divisors is an integer number (3273984).

Almost surely, 2^40210105 is an apocalyptic number.

It is an amenable number.

40210105 is a deficient number, since it is larger than the sum of its proper divisors (12173639).

40210105 is a wasteful number, since it uses less digits than its factorization.

40210105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016.

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

The square root of 40210105 is about 6341.1438242639. The cubic root of 40210105 is about 342.5929348033.

Adding to 40210105 its reverse (50101204), we get a palindrome (90311309).

The spelling of 40210105 in words is "forty million, two hundred ten thousand, one hundred five".