1240423420222 has 24 divisors (see below), whose sum is σ = 2179983629880. Its totient is φ = 527785498800.

The previous prime is 1240423420207. The next prime is 1240423420273. The reversal of 1240423420222 is 2220243240421.

It is a happy number.

It is a super-2 number, since 2×1240423420222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45516529 + ... + 45543772.

It is an arithmetic number, because the mean of its divisors is an integer number (90832651245).

Almost surely, 2^{1240423420222} is an apocalyptic number.

1240423420222 is a deficient number, since it is larger than the sum of its proper divisors (939560209658).

1240423420222 is a wasteful number, since it uses less digits than its factorization.

1240423420222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91060456 (or 91060449 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 1240423420222 its reverse (2220243240421), we get a palindrome (3460666660643).

The spelling of 1240423420222 in words is "one trillion, two hundred forty billion, four hundred twenty-three million, four hundred twenty thousand, two hundred twenty-two".