1300421124 has 72 divisors (see below), whose sum is σ = 3389087520. Its totient is φ = 420239232.

The previous prime is 1300421117. The next prime is 1300421131. The reversal of 1300421124 is 4211240031.

It is an interprime number because it is at equal distance from previous prime (1300421117) and next prime (1300421131).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1300421097 and 1300421106.

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, 150859 + ... + 159245.

It is an arithmetic number, because the mean of its divisors is an integer number (47070660).

Almost surely, 2^1300421124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1300421124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1694543760).

1300421124 is an abundant number, since it is smaller than the sum of its proper divisors (2088666396).

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

1300421124 is a wasteful number, since it uses less digits than its factorization.

1300421124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8529 (or 8524 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1300421124 is about 36061.3522209026. The cubic root of 1300421124 is about 1091.5107195012.

Adding to 1300421124 its reverse (4211240031), we get a palindrome (5511661155).

The spelling of 1300421124 in words is "one billion, three hundred million, four hundred twenty-one thousand, one hundred twenty-four".