1300135642 has 16 divisors (see below), whose sum is σ = 2108037960. Its totient is φ = 597828672.

The previous prime is 1300135589. The next prime is 1300135657. The reversal of 1300135642 is 2465310031.

It can be written as a sum of positive squares in 4 ways, for example, as 457917201 + 842218441 = 21399^2 + 29021^2 .

It is a super-3 number, since 3×1300135642³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85953 + ... + 99940.

Almost surely, 2^1300135642 is an apocalyptic number.

1300135642 is a deficient number, since it is larger than the sum of its proper divisors (807902318).

1300135642 is a wasteful number, since it uses less digits than its factorization.

1300135642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186177.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1300135642 is about 36057.3937216766. The cubic root of 1300135642 is about 1091.4308403855.

Adding to 1300135642 its reverse (2465310031), we get a palindrome (3765445673).

The spelling of 1300135642 in words is "one billion, three hundred million, one hundred thirty-five thousand, six hundred forty-two".