1421535200 has 72 divisors (see below), whose sum is σ = 3478136760. Its totient is φ = 567334400.

The previous prime is 1421535197. The next prime is 1421535281. The reversal of 1421535200 is 25351241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405455 + ... + 408945.

It is an arithmetic number, because the mean of its divisors is an integer number (48307455).

Almost surely, 2^1421535200 is an apocalyptic number.

1421535200 is a gapful number since it is divisible by the number (10) 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 1421535200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1739068380).

1421535200 is an abundant number, since it is smaller than the sum of its proper divisors (2056601560).

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

1421535200 is a wasteful number, since it uses less digits than its factorization.

1421535200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020 (or 4007 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1421535200 is about 37703.2518491443. The cubic root of 1421535200 is about 1124.3957775960.

Adding to 1421535200 its reverse (25351241), we get a palindrome (1446886441).

The spelling of 1421535200 in words is "one billion, four hundred twenty-one million, five hundred thirty-five thousand, two hundred".