121487404490 has 16 divisors (see below), whose sum is σ = 218824810848. Its totient is φ = 48562187856.

The previous prime is 121487404439. The next prime is 121487404501. The reversal of 121487404490 is 94404784121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4081172 + ... + 4110831.

It is an arithmetic number, because the mean of its divisors is an integer number (13676550678).

Almost surely, 2^121487404490 is an apocalyptic number.

121487404490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121487404490 is a deficient number, since it is larger than the sum of its proper divisors (97337406358).

121487404490 is a wasteful number, since it uses less digits than its factorization.

121487404490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8193493.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 121487404490 in words is "one hundred twenty-one billion, four hundred eighty-seven million, four hundred four thousand, four hundred ninety".