40212055 has 32 divisors (see below), whose sum is σ = 55617408. Its totient is φ = 27648000.

The previous prime is 40212047. The next prime is 40212059. The reversal of 40212055 is 55021204.

It is not a de Polignac number, because 40212055 - 2³ = 40212047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166735 + ... + 166975.

It is an arithmetic number, because the mean of its divisors is an integer number (1738044).

Almost surely, 2^40212055 is an apocalyptic number.

40212055 is a deficient number, since it is larger than the sum of its proper divisors (15405353).

40212055 is a wasteful number, since it uses less digits than its factorization.

40212055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 40212055 is about 6341.2975801487. The cubic root of 40212055 is about 342.5984727597.

Adding to 40212055 its reverse (55021204), we get a palindrome (95233259).

The spelling of 40212055 in words is "forty million, two hundred twelve thousand, fifty-five".