1255244420042 has 32 divisors (see below), whose sum is σ = 2023067128320. Its totient is φ = 583089390720.

The previous prime is 1255244420039. The next prime is 1255244420047. The reversal of 1255244420042 is 2400244425521.

It is a junction number, because it is equal to n+sod(n) for n = 1255244419984 and 1255244420011.

It is not an unprimeable number, because it can be changed into a prime (1255244420047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4258742 + ... + 4543937.

It is an arithmetic number, because the mean of its divisors is an integer number (63220847760).

Almost surely, 2^{1255244420042} is an apocalyptic number.

1255244420042 is a deficient number, since it is larger than the sum of its proper divisors (767822708278).

1255244420042 is a wasteful number, since it uses less digits than its factorization.

1255244420042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8802806.

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 1255244420042 its reverse (2400244425521), we get a palindrome (3655488845563).

The spelling of 1255244420042 in words is "one trillion, two hundred fifty-five billion, two hundred forty-four million, four hundred twenty thousand, forty-two".