1422721300 has 288 divisors, whose sum is σ = 4231229184. Its totient is φ = 400896000.

The previous prime is 1422721277. The next prime is 1422721303. The reversal of 1422721300 is 31272241.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422721303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6105984 + ... + 6106216.

It is an arithmetic number, because the mean of its divisors is an integer number (14691768).

Almost surely, 2^1422721300 is an apocalyptic number.

1422721300 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 1422721300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2115614592).

1422721300 is an abundant number, since it is smaller than the sum of its proper divisors (2808507884).

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

1422721300 is a wasteful number, since it uses less digits than its factorization.

1422721300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1422721300 is about 37718.9779819125. The cubic root of 1422721300 is about 1124.7084149665.

Adding to 1422721300 its reverse (31272241), we get a palindrome (1453993541).

The spelling of 1422721300 in words is "one billion, four hundred twenty-two million, seven hundred twenty-one thousand, three hundred".