420401123 has 8 divisors (see below), whose sum is σ = 424402176. Its totient is φ = 416419200.

The previous prime is 420401117. The next prime is 420401147. The reversal of 420401123 is 321104024.

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 420401123 - 2⁸ = 420400867 is a prime.

It is a super-2 number, since 2×420401123² = 353474208439322258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420401173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41465 + ... + 50597.

It is an arithmetic number, because the mean of its divisors is an integer number (53050272).

Almost surely, 2^420401123 is an apocalyptic number.

420401123 is a deficient number, since it is larger than the sum of its proper divisors (4001053).

420401123 is a wasteful number, since it uses less digits than its factorization.

420401123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9565.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 420401123 is about 20503.6855955216. The cubic root of 420401123 is about 749.1255723052.

Adding to 420401123 its reverse (321104024), we get a palindrome (741505147).

The spelling of 420401123 in words is "four hundred twenty million, four hundred one thousand, one hundred twenty-three".