121430550 has 48 divisors (see below), whose sum is σ = 301855680. Its totient is φ = 32305440.

The previous prime is 121430549. The next prime is 121430611. The reversal of 121430550 is 55034121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95821 + ... + 97079.

It is an arithmetic number, because the mean of its divisors is an integer number (6288660).

Almost surely, 2^121430550 is an apocalyptic number.

121430550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121430550 is an abundant number, since it is smaller than the sum of its proper divisors (180425130).

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

121430550 is a wasteful number, since it uses less digits than its factorization.

121430550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1912 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 121430550 is about 11019.5530762368. The cubic root of 121430550 is about 495.1946994517.

Adding to 121430550 its reverse (55034121), we get a palindrome (176464671).

The spelling of 121430550 in words is "one hundred twenty-one million, four hundred thirty thousand, five hundred fifty".