1421256132 has 120 divisors (see below), whose sum is σ = 3891267072. Its totient is φ = 451785600.

The previous prime is 1421256113. The next prime is 1421256139. The reversal of 1421256132 is 2316521241.

1421256132 is a `hidden beast` number, since 1 + 4 + 21 + 25 + 613 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1421256096 and 1421256105.

It is not an unprimeable number, because it can be changed into a prime (1421256139) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 712128 + ... + 714120.

Almost surely, 2^1421256132 is an apocalyptic number.

1421256132 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 1421256132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1945633536).

1421256132 is an abundant number, since it is smaller than the sum of its proper divisors (2470010940).

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

1421256132 is a wasteful number, since it uses less digits than its factorization.

1421256132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111 (or 2100 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1421256132 is about 37699.5508196053. The cubic root of 1421256132 is about 1124.3221943749.

Adding to 1421256132 its reverse (2316521241), we get a palindrome (3737777373).

The spelling of 1421256132 in words is "one billion, four hundred twenty-one million, two hundred fifty-six thousand, one hundred thirty-two".