1241244155542 has 4 divisors (see below), whose sum is σ = 1861866233316. Its totient is φ = 620622077770.

The previous prime is 1241244155539. The next prime is 1241244155551. The reversal of 1241244155542 is 2455514421421.

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

It is a junction number, because it is equal to n+sod(n) for n = 1241244155495 and 1241244155504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310311038884 + ... + 310311038887.

It is an arithmetic number, because the mean of its divisors is an integer number (465466558329).

Almost surely, 2^{1241244155542} is an apocalyptic number.

1241244155542 is a deficient number, since it is larger than the sum of its proper divisors (620622077774).

1241244155542 is an equidigital number, since it uses as much as digits as its factorization.

1241244155542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620622077773.

The product of its digits is 256000, while the sum is 40.

Adding to 1241244155542 its reverse (2455514421421), we get a palindrome (3696758576963).

The spelling of 1241244155542 in words is "one trillion, two hundred forty-one billion, two hundred forty-four million, one hundred fifty-five thousand, five hundred forty-two".