121045136542 has 8 divisors (see below), whose sum is σ = 198073859832. Its totient is φ = 55020516600.

The previous prime is 121045136501. The next prime is 121045136551. The reversal of 121045136542 is 245631540121.

121045136542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 121045136498 and 121045136507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2751025809 + ... + 2751025852.

It is an arithmetic number, because the mean of its divisors is an integer number (24759232479).

Almost surely, 2^121045136542 is an apocalyptic number.

121045136542 is a deficient number, since it is larger than the sum of its proper divisors (77028723290).

121045136542 is a wasteful number, since it uses less digits than its factorization.

121045136542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5502051674.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 121045136542 its reverse (245631540121), we get a palindrome (366676676663).

The spelling of 121045136542 in words is "one hundred twenty-one billion, forty-five million, one hundred thirty-six thousand, five hundred forty-two".