121240432 has 10 divisors (see below), whose sum is σ = 234903368. Its totient is φ = 60620208.

The previous prime is 121240409. The next prime is 121240439. The reversal of 121240432 is 234042121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121240439) by changing a digit.

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, 3788748 + ... + 3788779.

Almost surely, 2^121240432 is an apocalyptic number.

It is an amenable number.

121240432 is a deficient number, since it is larger than the sum of its proper divisors (113662936).

121240432 is an equidigital number, since it uses as much as digits as its factorization.

121240432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7577535 (or 7577529 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 121240432 is about 11010.9233037016. The cubic root of 121240432 is about 494.9361302485.

Adding to 121240432 its reverse (234042121), we get a palindrome (355282553).

The spelling of 121240432 in words is "one hundred twenty-one million, two hundred forty thousand, four hundred thirty-two".