1420203312 has 240 divisors, whose sum is σ = 4596134400. Its totient is φ = 405296640.

The previous prime is 1420203311. The next prime is 1420203329. The reversal of 1420203312 is 2133020241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1420203311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1974889 + ... + 1975607.

It is an arithmetic number, because the mean of its divisors is an integer number (19150560).

Almost surely, 2^1420203312 is an apocalyptic number.

1420203312 is a gapful number since it is divisible by the number (12) 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 1420203312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298067200).

1420203312 is an abundant number, since it is smaller than the sum of its proper divisors (3175931088).

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

1420203312 is a wasteful number, since it uses less digits than its factorization.

1420203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1420203312 is about 37685.5849364183. The cubic root of 1420203312 is about 1124.0445054417.

Adding to 1420203312 its reverse (2133020241), we get a palindrome (3553223553).

The spelling of 1420203312 in words is "one billion, four hundred twenty million, two hundred three thousand, three hundred twelve".