423145122400 has 288 divisors, whose sum is σ = 1386971728128. Its totient is φ = 121743820800.

The previous prime is 423145122341. The next prime is 423145122403. The reversal of 423145122400 is 4221541324.

It is a super-2 number, since 2×423145122400² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423145122403) 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, 536599 + ... + 1065001.

It is an arithmetic number, because the mean of its divisors is an integer number (4815874056).

Almost surely, 2^423145122400 is an apocalyptic number.

423145122400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423145122400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (693485864064).

423145122400 is an abundant number, since it is smaller than the sum of its proper divisors (963826605728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423145122400 is a wasteful number, since it uses less digits than its factorization.

423145122400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528454 (or 528441 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 423145122400 its reverse (4221541324), we get a palindrome (427366663724).

It can be divided in two parts, 423145 and 122400, that added together give a palindrome (545545).

The spelling of 423145122400 in words is "four hundred twenty-three billion, one hundred forty-five million, one hundred twenty-two thousand, four hundred".