121424055 has 16 divisors (see below), whose sum is σ = 200546304. Its totient is φ = 62670240.

The previous prime is 121424053. The next prime is 121424057. The reversal of 121424055 is 550424121.

It is an interprime number because it is at equal distance from previous prime (121424053) and next prime (121424057).

It is not a de Polignac number, because 121424055 - 2¹ = 121424053 is a prime.

It is a super-2 number, since 2×121424055² = 29487602265286050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121424053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130099 + ... + 131028.

It is an arithmetic number, because the mean of its divisors is an integer number (12534144).

Almost surely, 2^121424055 is an apocalyptic number.

121424055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121424055 is a deficient number, since it is larger than the sum of its proper divisors (79122249).

121424055 is a wasteful number, since it uses less digits than its factorization.

121424055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261166.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 121424055 is about 11019.2583688740. The cubic root of 121424055 is about 495.1858704079.

Adding to 121424055 its reverse (550424121), we get a palindrome (671848176).

The spelling of 121424055 in words is "one hundred twenty-one million, four hundred twenty-four thousand, fifty-five".