1255434215042 has 16 divisors (see below), whose sum is σ = 2152188753792. Its totient is φ = 538039281600.

The previous prime is 1255434215039. The next prime is 1255434215047. The reversal of 1255434215042 is 2405124345521.

It is a super-2 number, since 2×1255434215042² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1255434214987 and 1255434215005.

It is not an unprimeable number, because it can be changed into a prime (1255434215047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2456042 + ... + 2922842.

It is an arithmetic number, because the mean of its divisors is an integer number (134511797112).

Almost surely, 2^{1255434215042} is an apocalyptic number.

1255434215042 is a deficient number, since it is larger than the sum of its proper divisors (896754538750).

1255434215042 is a wasteful number, since it uses less digits than its factorization.

1255434215042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658913.

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 1255434215042 in words is "one trillion, two hundred fifty-five billion, four hundred thirty-four million, two hundred fifteen thousand, forty-two".