1421575400 has 96 divisors (see below), whose sum is σ = 3786186240. Its totient is φ = 486255360.

The previous prime is 1421575391. The next prime is 1421575429. The reversal of 1421575400 is 45751241.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 778889 + ... + 780711.

It is an arithmetic number, because the mean of its divisors is an integer number (39439440).

Almost surely, 2^1421575400 is an apocalyptic number.

1421575400 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 1421575400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1893093120).

1421575400 is an abundant number, since it is smaller than the sum of its proper divisors (2364610840).

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

1421575400 is a wasteful number, since it uses less digits than its factorization.

1421575400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403 (or 2394 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 1421575400 is about 37703.7849558900. The cubic root of 1421575400 is about 1124.4063765325.

The spelling of 1421575400 in words is "one billion, four hundred twenty-one million, five hundred seventy-five thousand, four hundred".