1212406041 has 32 divisors (see below), whose sum is σ = 2033307648. Its totient is φ = 624234240.

The previous prime is 1212406037. The next prime is 1212406073. The reversal of 1212406041 is 1406042121.

It is a happy number.

It is not a de Polignac number, because 1212406041 - 2² = 1212406037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1212405999 and 1212406017.

It is not an unprimeable number, because it can be changed into a prime (1212406541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2880 + ... + 49326.

It is an arithmetic number, because the mean of its divisors is an integer number (63540864).

Almost surely, 2^1212406041 is an apocalyptic number.

1212406041 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212406041 is a deficient number, since it is larger than the sum of its proper divisors (820901607).

1212406041 is a wasteful number, since it uses less digits than its factorization.

1212406041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46581.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1212406041 is about 34819.6214942093. The cubic root of 1212406041 is about 1066.3080728962.

Adding to 1212406041 its reverse (1406042121), we get a palindrome (2618448162).

It can be divided in two parts, 1212 and 406041, that added together give a triangular number (407253 = T₉₀₂).

The spelling of 1212406041 in words is "one billion, two hundred twelve million, four hundred six thousand, forty-one".