420113123 has 8 divisors (see below), whose sum is σ = 443002320. Its totient is φ = 397301760.

The previous prime is 420113117. The next prime is 420113149. The reversal of 420113123 is 321311024.

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 420113123 - 2⁴ = 420113107 is a prime.

It is a super-2 number, since 2×420113123² = 352990072233626258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420113153) 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, 8198 + ... + 30123.

It is an arithmetic number, because the mean of its divisors is an integer number (55375290).

Almost surely, 2^420113123 is an apocalyptic number.

420113123 is a deficient number, since it is larger than the sum of its proper divisors (22889197).

420113123 is a wasteful number, since it uses less digits than its factorization.

420113123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38917.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 420113123 is about 20496.6612647036. The cubic root of 420113123 is about 748.9544679015.

Adding to 420113123 its reverse (321311024), we get a palindrome (741424147).

The spelling of 420113123 in words is "four hundred twenty million, one hundred thirteen thousand, one hundred twenty-three".