2123423210403 has 48 divisors (see below), whose sum is σ = 3652553923200. Its totient is φ = 1219190330880.

The previous prime is 2123423210341. The next prime is 2123423210411. The reversal of 2123423210403 is 3040123243212.

2123423210403 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 42 + 3 + 210 + 403 = 666.

It is not a de Polignac number, because 2123423210403 - 2¹³ = 2123423202211 is a prime.

It is a super-2 number, since 2×2123423210403² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2123423210603) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20854398 + ... + 20955971.

It is an arithmetic number, because the mean of its divisors is an integer number (76094873400).

Almost surely, 2^{2123423210403} is an apocalyptic number.

2123423210403 is a deficient number, since it is larger than the sum of its proper divisors (1529130712797).

2123423210403 is a wasteful number, since it uses less digits than its factorization.

2123423210403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41810414 (or 41810402 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 2123423210403 its reverse (3040123243212), we get a palindrome (5163546453615).

The spelling of 2123423210403 in words is "two trillion, one hundred twenty-three billion, four hundred twenty-three million, two hundred ten thousand, four hundred three".