1421440272 has 320 divisors, whose sum is σ = 4913971200. Its totient is φ = 384860160.

The previous prime is 1421440247. The next prime is 1421440283. The reversal of 1421440272 is 2720441241.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5530768 + ... + 5531024.

It is an arithmetic number, because the mean of its divisors is an integer number (15356160).

Almost surely, 2^1421440272 is an apocalyptic number.

1421440272 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 1421440272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2456985600).

1421440272 is an abundant number, since it is smaller than the sum of its proper divisors (3492530928).

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

1421440272 is a wasteful number, since it uses less digits than its factorization.

1421440272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 1421440272 is about 37701.9929446707. The cubic root of 1421440272 is about 1124.3707485479.

The spelling of 1421440272 in words is "one billion, four hundred twenty-one million, four hundred forty thousand, two hundred seventy-two".