1013021430 has 64 divisors (see below), whose sum is σ = 2560854528. Its totient is φ = 255960320.

The previous prime is 1013021411. The next prime is 1013021437. The reversal of 1013021430 is 341203101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013021437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66970 + ... + 80690.

It is an arithmetic number, because the mean of its divisors is an integer number (40013352).

Almost surely, 2^1013021430 is an apocalyptic number.

1013021430 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 1013021430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1280427264).

1013021430 is an abundant number, since it is smaller than the sum of its proper divisors (1547833098).

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

1013021430 is a wasteful number, since it uses less digits than its factorization.

1013021430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13861.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1013021430 is about 31827.9975807464. The cubic root of 1013021430 is about 1004.3217720461.

Adding to 1013021430 its reverse (341203101), we get a palindrome (1354224531).

The spelling of 1013021430 in words is "one billion, thirteen million, twenty-one thousand, four hundred thirty".