1254422121242 has 4 divisors (see below), whose sum is σ = 1881633181866. Its totient is φ = 627211060620.

The previous prime is 1254422121179. The next prime is 1254422121259. The reversal of 1254422121242 is 2421212244521.

It is a happy number.

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., 1217489353201 + 36932768041 = 1103399^2 + 192179^2 .

It is a super-2 number, since 2×1254422121242² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1254422121199 and 1254422121208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313605530309 + ... + 313605530312.

Almost surely, 2^{1254422121242} is an apocalyptic number.

1254422121242 is a deficient number, since it is larger than the sum of its proper divisors (627211060624).

1254422121242 is an equidigital number, since it uses as much as digits as its factorization.

1254422121242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627211060623.

The product of its digits is 20480, while the sum is 32.

Adding to 1254422121242 its reverse (2421212244521), we get a palindrome (3675634365763).

The spelling of 1254422121242 in words is "one trillion, two hundred fifty-four billion, four hundred twenty-two million, one hundred twenty-one thousand, two hundred forty-two".