1240430420122 has 4 divisors (see below), whose sum is σ = 1860645630186. Its totient is φ = 620215210060.

The previous prime is 1240430420107. The next prime is 1240430420129. The reversal of 1240430420122 is 2210240340421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 735578960281 + 504851459841 = 857659^2 + 710529^2 .

It is not an unprimeable number, because it can be changed into a prime (1240430420129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310107605029 + ... + 310107605032.

Almost surely, 2^{1240430420122} is an apocalyptic number.

1240430420122 is a deficient number, since it is larger than the sum of its proper divisors (620215210064).

1240430420122 is an equidigital number, since it uses as much as digits as its factorization.

1240430420122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620215210063.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1240430420122 its reverse (2210240340421), we get a palindrome (3450670760543).

The spelling of 1240430420122 in words is "one trillion, two hundred forty billion, four hundred thirty million, four hundred twenty thousand, one hundred twenty-two".