121340420504 has 32 divisors (see below), whose sum is σ = 228938058720. Its totient is φ = 60291449856.

The previous prime is 121340420477. The next prime is 121340420507. The reversal of 121340420504 is 405024043121.

It is a super-2 number, since 2×121340420504² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340420507) 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, 754109 + ... + 900755.

It is an arithmetic number, because the mean of its divisors is an integer number (7154314335).

Almost surely, 2^121340420504 is an apocalyptic number.

It is an amenable number.

121340420504 is a deficient number, since it is larger than the sum of its proper divisors (107597638216).

121340420504 is a wasteful number, since it uses less digits than its factorization.

121340420504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147299 (or 147295 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 121340420504 its reverse (405024043121), we get a palindrome (526364463625).

The spelling of 121340420504 in words is "one hundred twenty-one billion, three hundred forty million, four hundred twenty thousand, five hundred four".