1302123040 has 48 divisors (see below), whose sum is σ = 3084321240. Its totient is φ = 519485440.

The previous prime is 1302122993. The next prime is 1302123049. The reversal of 1302123040 is 403212031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1013530896 + 288592144 = 31836^2 + 16988^2 .

It is a super-2 number, since 2×1302123040² = 3391048822597683200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1302123049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51780 + ... + 72700.

Almost surely, 2^1302123040 is an apocalyptic number.

1302123040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302123040 is an abundant number, since it is smaller than the sum of its proper divisors (1782198200).

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

1302123040 is a wasteful number, since it uses less digits than its factorization.

1302123040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21325 (or 21317 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1302123040 is about 36084.9420118697. The cubic root of 1302123040 is about 1091.9866806374.

Adding to 1302123040 its reverse (403212031), we get a palindrome (1705335071).

The spelling of 1302123040 in words is "one billion, three hundred two million, one hundred twenty-three thousand, forty".