40123206 has 24 divisors (see below), whose sum is σ = 87062040. Its totient is φ = 13354656.

The previous prime is 40123199. The next prime is 40123217. The reversal of 40123206 is 60232104.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15985 + ... + 18323.

It is an arithmetic number, because the mean of its divisors is an integer number (3627585).

Almost surely, 2^40123206 is an apocalyptic number.

40123206 is an abundant number, since it is smaller than the sum of its proper divisors (46938834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40123206 is a wasteful number, since it uses less digits than its factorization.

40123206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300 (or 3297 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40123206 is about 6334.2881210125. The cubic root of 40123206 is about 342.3459615986.

The spelling of 40123206 in words is "forty million, one hundred twenty-three thousand, two hundred six".