1421346528 has 540 divisors, whose sum is σ = 5297558112. Its totient is φ = 372314880.

The previous prime is 1421346503. The next prime is 1421346533. The reversal of 1421346528 is 8256431241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1421346492 and 1421346501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 45849873 + ... + 45849903.

Almost surely, 2^1421346528 is an apocalyptic number.

1421346528 is a gapful number since it is divisible by the number (18) 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 1421346528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2648779056).

1421346528 is an abundant number, since it is smaller than the sum of its proper divisors (3876211584).

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

1421346528 is a wasteful number, since it uses less digits than its factorization.

1421346528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 62 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1421346528 is about 37700.7497007686. The cubic root of 1421346528 is about 1124.3460305839.

Adding to 1421346528 its reverse (8256431241), we get a palindrome (9677777769).

The spelling of 1421346528 in words is "one billion, four hundred twenty-one million, three hundred forty-six thousand, five hundred twenty-eight".