121240240432 has 10 divisors (see below), whose sum is σ = 234902965868. Its totient is φ = 60620120208.

The previous prime is 121240240393. The next prime is 121240240601. The reversal of 121240240432 is 234042042121.

It is a super-4 number, since 4×121240240432⁴ (a number of 45 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121240240397 and 121240240406.

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 as a sum of consecutive naturals, namely, 3788757498 + ... + 3788757529.

Almost surely, 2^121240240432 is an apocalyptic number.

It is an amenable number.

121240240432 is a deficient number, since it is larger than the sum of its proper divisors (113662725436).

121240240432 is an equidigital number, since it uses as much as digits as its factorization.

121240240432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7577515035 (or 7577515029 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 121240240432 its reverse (234042042121), we get a palindrome (355282282553).

The spelling of 121240240432 in words is "one hundred twenty-one billion, two hundred forty million, two hundred forty thousand, four hundred thirty-two".