1302121230 has 16 divisors (see below), whose sum is σ = 3125091024. Its totient is φ = 347232320.

The previous prime is 1302121207. The next prime is 1302121237. The reversal of 1302121230 is 321212031.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302121237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21701991 + ... + 21702050.

It is an arithmetic number, because the mean of its divisors is an integer number (195318189).

Almost surely, 2^1302121230 is an apocalyptic number.

1302121230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1302121230 is an abundant number, since it is smaller than the sum of its proper divisors (1822969794).

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

1302121230 is a wasteful number, since it uses less digits than its factorization.

1302121230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43404051.

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

The square root of 1302121230 is about 36084.9169321477. The cubic root of 1302121230 is about 1091.9861746697.

Adding to 1302121230 its reverse (321212031), we get a palindrome (1623333261).

The spelling of 1302121230 in words is "one billion, three hundred two million, one hundred twenty-one thousand, two hundred thirty".