542121121245 has 96 divisors (see below), whose sum is σ = 963821182464. Its totient is φ = 259985911680.

The previous prime is 542121121231. The next prime is 542121121261.

542121121245 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 542121121245 - 2¹⁸ = 542120859101 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 152837562 + ... + 152841108.

It is an arithmetic number, because the mean of its divisors is an integer number (10039803984).

Almost surely, 2^542121121245 is an apocalyptic number.

542121121245 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

542121121245 is a deficient number, since it is larger than the sum of its proper divisors (421700061219).

542121121245 is a wasteful number, since it uses less digits than its factorization.

542121121245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471 (or 4460 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

It can be divided in two parts, 542121 and 121245, that added together give a palindrome (663366).

The spelling of 542121121245 in words is "five hundred forty-two billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred forty-five".