40921212 has 24 divisors (see below), whose sum is σ = 100508800. Its totient is φ = 12922416.

The previous prime is 40921207. The next prime is 40921217. The reversal of 40921212 is 21212904.

It is an interprime number because it is at equal distance from previous prime (40921207) and next prime (40921217).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40921217) 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, 89512 + ... + 89967.

Almost surely, 2^40921212 is an apocalyptic number.

It is an amenable number.

40921212 is an abundant number, since it is smaller than the sum of its proper divisors (59587588).

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

40921212 is a wasteful number, since it uses less digits than its factorization.

40921212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179505 (or 179503 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 40921212 is about 6396.9689697543. The cubic root of 40921212 is about 344.6007058674.

The spelling of 40921212 in words is "forty million, nine hundred twenty-one thousand, two hundred twelve".