1421109750 has 128 divisors (see below), whose sum is σ = 3855421440. Its totient is φ = 347328000.

The previous prime is 1421109737. The next prime is 1421109751. The reversal of 1421109750 is 579011241.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421109751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 440142 + ... + 443358.

It is an arithmetic number, because the mean of its divisors is an integer number (30120480).

Almost surely, 2^1421109750 is an apocalyptic number.

1421109750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421109750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1927710720).

1421109750 is an abundant number, since it is smaller than the sum of its proper divisors (2434311690).

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

1421109750 is a wasteful number, since it uses less digits than its factorization.

1421109750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287 (or 3277 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 1421109750 is about 37697.6093406465. The cubic root of 1421109750 is about 1124.2835932675.

The spelling of 1421109750 in words is "one billion, four hundred twenty-one million, one hundred nine thousand, seven hundred fifty".