40126668 has 12 divisors (see below), whose sum is σ = 93628920. Its totient is φ = 13375552.

The previous prime is 40126663. The next prime is 40126687. The reversal of 40126668 is 86662104.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×40126668² = 3220298969564448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40126663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671933 + ... + 1671956.

It is an arithmetic number, because the mean of its divisors is an integer number (7802410).

Almost surely, 2^40126668 is an apocalyptic number.

It is an amenable number.

40126668 is an abundant number, since it is smaller than the sum of its proper divisors (53502252).

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

40126668 is a wasteful number, since it uses less digits than its factorization.

40126668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343896 (or 3343894 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 40126668 is about 6334.5613897096. The cubic root of 40126668 is about 342.3558076681.

The spelling of 40126668 in words is "forty million, one hundred twenty-six thousand, six hundred sixty-eight".