1242534513 has 16 divisors (see below), whose sum is σ = 1837958400. Its totient is φ = 740286480.

The previous prime is 1242534409. The next prime is 1242534521. The reversal of 1242534513 is 3154352421.

It is not a de Polignac number, because 1242534513 - 2⁹ = 1242534001 is a prime.

It is a super-2 number, since 2×1242534513² = 3087784031992294338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242534593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317143 + ... + 321036.

It is an arithmetic number, because the mean of its divisors is an integer number (114872400).

Almost surely, 2^1242534513 is an apocalyptic number.

It is an amenable number.

1242534513 is a deficient number, since it is larger than the sum of its proper divisors (595423887).

1242534513 is a wasteful number, since it uses less digits than its factorization.

1242534513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638252.

The product of its digits is 14400, while the sum is 30.

The square root of 1242534513 is about 35249.6030190412. The cubic root of 1242534513 is about 1075.0685409336.

Adding to 1242534513 its reverse (3154352421), we get a palindrome (4396886934).

The spelling of 1242534513 in words is "one billion, two hundred forty-two million, five hundred thirty-four thousand, five hundred thirteen".