420453443400 has 384 divisors, whose sum is σ = 1442653200000. Its totient is φ = 100870963200.

The previous prime is 420453443387. The next prime is 420453443407. The reversal of 420453443400 is 4344354024.

It is not an unprimeable number, because it can be changed into a prime (420453443407) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20156176 + ... + 20177024.

It is an arithmetic number, because the mean of its divisors is an integer number (3756909375).

Almost surely, 2^420453443400 is an apocalyptic number.

420453443400 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 420453443400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (721326600000).

420453443400 is an abundant number, since it is smaller than the sum of its proper divisors (1022199756600).

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

420453443400 is a wasteful number, since it uses less digits than its factorization.

420453443400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20977 (or 20968 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 33.

Adding to 420453443400 its reverse (4344354024), we get a palindrome (424797797424).

The spelling of 420453443400 in words is "four hundred twenty billion, four hundred fifty-three million, four hundred forty-three thousand, four hundred".