421442011023 has 16 divisors (see below), whose sum is σ = 622155916416. Its totient is φ = 251607169440.

The previous prime is 421442011019. The next prime is 421442011049. The reversal of 421442011023 is 320110244124.

It is not a de Polignac number, because 421442011023 - 2² = 421442011019 is a prime.

It is a super-2 number, since 2×421442011023² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421442010984 and 421442011002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421442015023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95303536 + ... + 95307957.

It is an arithmetic number, because the mean of its divisors is an integer number (38884744776).

Almost surely, 2^421442011023 is an apocalyptic number.

421442011023 is a deficient number, since it is larger than the sum of its proper divisors (200713905393).

421442011023 is a wasteful number, since it uses less digits than its factorization.

421442011023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190611574.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 421442011023 its reverse (320110244124), we get a palindrome (741552255147).

The spelling of 421442011023 in words is "four hundred twenty-one billion, four hundred forty-two million, eleven thousand, twenty-three".