1421556400 has 180 divisors, whose sum is σ = 3920280336. Its totient is φ = 494067200.

The previous prime is 1421556379. The next prime is 1421556419. The reversal of 1421556400 is 46551241.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1112562 + ... + 1113838.

Almost surely, 2^1421556400 is an apocalyptic number.

1421556400 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 1421556400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1960140168).

1421556400 is an abundant number, since it is smaller than the sum of its proper divisors (2498723936).

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

1421556400 is a wasteful number, since it uses less digits than its factorization.

1421556400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1421556400 is about 37703.5329909546. The cubic root of 1421556400 is about 1124.4013671098.

The spelling of 1421556400 in words is "one billion, four hundred twenty-one million, five hundred fifty-six thousand, four hundred".