121355450542 has 8 divisors (see below), whose sum is σ = 182036646000. Its totient is φ = 60676568544.

The previous prime is 121355450533. The next prime is 121355450603. The reversal of 121355450542 is 245054553121.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440667 + ... + 660982.

It is an arithmetic number, because the mean of its divisors is an integer number (22754580750).

Almost surely, 2^121355450542 is an apocalyptic number.

121355450542 is a deficient number, since it is larger than the sum of its proper divisors (60681195458).

121355450542 is a wasteful number, since it uses less digits than its factorization.

121355450542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156730.

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 121355450542 in words is "one hundred twenty-one billion, three hundred fifty-five million, four hundred fifty thousand, five hundred forty-two".