121847042480 has 40 divisors (see below), whose sum is σ = 284859569904. Its totient is φ = 48469536000.

The previous prime is 121847042459. The next prime is 121847042483. The reversal of 121847042480 is 84240748121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×121847042480² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121847042483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4192946 + ... + 4221905.

Almost surely, 2^121847042480 is an apocalyptic number.

121847042480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121847042480 is an abundant number, since it is smaller than the sum of its proper divisors (163012527424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121847042480 is a wasteful number, since it uses less digits than its factorization.

121847042480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8415045 (or 8415039 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The spelling of 121847042480 in words is "one hundred twenty-one billion, eight hundred forty-seven million, forty-two thousand, four hundred eighty".