123101421 has 8 divisors (see below), whose sum is σ = 164408064. Its totient is φ = 81931200.

The previous prime is 123101417. The next prime is 123101423. The reversal of 123101421 is 124101321.

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

It is not a de Polignac number, because 123101421 - 2² = 123101417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123101421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123101423) 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, 31980 + ... + 35621.

It is an arithmetic number, because the mean of its divisors is an integer number (20551008).

Almost surely, 2^123101421 is an apocalyptic number.

It is an amenable number.

123101421 is a deficient number, since it is larger than the sum of its proper divisors (41306643).

123101421 is an equidigital number, since it uses as much as digits as its factorization.

123101421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68211.

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

The square root of 123101421 is about 11095.1079760406. The cubic root of 123101421 is about 497.4556357164.

Adding to 123101421 its reverse (124101321), we get a palindrome (247202742).

It can be divided in two parts, 12310 and 1421, that added together give a palindrome (13731).

The spelling of 123101421 in words is "one hundred twenty-three million, one hundred one thousand, four hundred twenty-one".