1421440032 has 48 divisors (see below), whose sum is σ = 3736962432. Its totient is φ = 473091840.

The previous prime is 1421440021. The next prime is 1421440073. The reversal of 1421440032 is 2300441241.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1421440032² = 4040983529144322048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421439990 and 1421440008.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 54057 + ... + 75927.

It is an arithmetic number, because the mean of its divisors is an integer number (77853384).

Almost surely, 2^1421440032 is an apocalyptic number.

1421440032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1421440032 is an abundant number, since it is smaller than the sum of its proper divisors (2315522400).

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

1421440032 is a wasteful number, since it uses less digits than its factorization.

1421440032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22561 (or 22553 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1421440032 is about 37701.9897618150. The cubic root of 1421440032 is about 1124.3706852673.

Adding to 1421440032 its reverse (2300441241), we get a palindrome (3721881273).

The spelling of 1421440032 in words is "one billion, four hundred twenty-one million, four hundred forty thousand, thirty-two".