123421101 has 8 divisors (see below), whose sum is σ = 165148224. Its totient is φ = 81987360.

The previous prime is 123421099. The next prime is 123421121. The reversal of 123421101 is 101124321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123421101 - 2¹ = 123421099 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123421121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72361 + ... + 74046.

It is an arithmetic number, because the mean of its divisors is an integer number (20643528).

Almost surely, 2^123421101 is an apocalyptic number.

It is an amenable number.

123421101 is a deficient number, since it is larger than the sum of its proper divisors (41727123).

123421101 is a wasteful number, since it uses less digits than its factorization.

123421101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146691.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 123421101 is about 11109.5049844716. The cubic root of 123421101 is about 497.8858748822.

Adding to 123421101 its reverse (101124321), we get a palindrome (224545422).

The spelling of 123421101 in words is "one hundred twenty-three million, four hundred twenty-one thousand, one hundred one".