123554121 has 16 divisors (see below), whose sum is σ = 166242240. Its totient is φ = 81622080.

The previous prime is 123554111. The next prime is 123554173. The reversal of 123554121 is 121455321.

It is a happy number.

It is not a de Polignac number, because 123554121 - 2¹⁴ = 123537737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123554091 and 123554100.

It is not an unprimeable number, because it can be changed into a prime (123554111) 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, 228111 + ... + 228651.

It is an arithmetic number, because the mean of its divisors is an integer number (10390140).

Almost surely, 2^123554121 is an apocalyptic number.

It is an amenable number.

123554121 is a deficient number, since it is larger than the sum of its proper divisors (42688119).

123554121 is a wasteful number, since it uses less digits than its factorization.

123554121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its digits is 1200, while the sum is 24.

The square root of 123554121 is about 11115.4901376413. The cubic root of 123554121 is about 498.0646800718.

Adding to 123554121 its product of digits (1200), we get a palindrome (123555321).

The spelling of 123554121 in words is "one hundred twenty-three million, five hundred fifty-four thousand, one hundred twenty-one".