421233213400 has 48 divisors (see below), whose sum is σ = 979456496040. Its totient is φ = 168477926400.

The previous prime is 421233213383. The next prime is 421233213407. The reversal of 421233213400 is 4312332124.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421233213407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2246047 + ... + 2426353.

Almost surely, 2^421233213400 is an apocalyptic number.

421233213400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421233213400 is an abundant number, since it is smaller than the sum of its proper divisors (558223282640).

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

421233213400 is a wasteful number, since it uses less digits than its factorization.

421233213400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192004 (or 191995 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 421233213400 its reverse (4312332124), we get a palindrome (425545545524).

It can be divided in two parts, 42123 and 3213400, that added together give a palindrome (3255523).

The spelling of 421233213400 in words is "four hundred twenty-one billion, two hundred thirty-three million, two hundred thirteen thousand, four hundred".