421421420123 has 8 divisors (see below), whose sum is σ = 459918088560. Its totient is φ = 382955690080.

The previous prime is 421421420113. The next prime is 421421420137. The reversal of 421421420123 is 321024124124.

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

It is a cyclic number.

It is not a de Polignac number, because 421421420123 - 2¹⁰ = 421421419099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421421420092 and 421421420101.

It is not an unprimeable number, because it can be changed into a prime (421421420113) 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, 7706108 + ... + 7760601.

It is an arithmetic number, because the mean of its divisors is an integer number (57489761070).

Almost surely, 2^421421420123 is an apocalyptic number.

421421420123 is a deficient number, since it is larger than the sum of its proper divisors (38496668437).

421421420123 is a wasteful number, since it uses less digits than its factorization.

421421420123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15469197.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 421421420123 its reverse (321024124124), we get a palindrome (742445544247).

The spelling of 421421420123 in words is "four hundred twenty-one billion, four hundred twenty-one million, four hundred twenty thousand, one hundred twenty-three".