1421433860 has 96 divisors (see below), whose sum is σ = 3744534528. Its totient is φ = 440311680.

The previous prime is 1421433859. The next prime is 1421433899. The reversal of 1421433860 is 683341241.

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 31 ways as a sum of consecutive naturals, for example, 254417 + ... + 259943.

It is an arithmetic number, because the mean of its divisors is an integer number (39005568).

Almost surely, 2^1421433860 is an apocalyptic number.

1421433860 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 1421433860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1872267264).

1421433860 is an abundant number, since it is smaller than the sum of its proper divisors (2323100668).

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

1421433860 is a wasteful number, since it uses less digits than its factorization.

1421433860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721 (or 5719 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1421433860 is about 37701.9079092823. The cubic root of 1421433860 is about 1124.3690578975.

The spelling of 1421433860 in words is "one billion, four hundred twenty-one million, four hundred thirty-three thousand, eight hundred sixty".