400041212 has 24 divisors (see below), whose sum is σ = 758496816. Its totient is φ = 183875328.

The previous prime is 400041203. The next prime is 400041217. The reversal of 400041212 is 212140004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400041217) 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, 65483 + ... + 71330.

It is an arithmetic number, because the mean of its divisors is an integer number (31604034).

Almost surely, 2^400041212 is an apocalyptic number.

It is an amenable number.

400041212 is a deficient number, since it is larger than the sum of its proper divisors (358455604).

400041212 is a wasteful number, since it uses less digits than its factorization.

400041212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136877 (or 136875 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 400041212 is about 20001.0302734634. The cubic root of 400041212 is about 736.8316032434.

Adding to 400041212 its reverse (212140004), we get a palindrome (612181216).

The spelling of 400041212 in words is "four hundred million, forty-one thousand, two hundred twelve".