1242620533 has 16 divisors (see below), whose sum is σ = 1553739264. Its totient is φ = 965464560.

The previous prime is 1242620503. The next prime is 1242620549. The reversal of 1242620533 is 3350262421.

It is a cyclic number.

It is not a de Polignac number, because 1242620533 - 2⁹ = 1242620021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242620503) 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 15 ways as a sum of consecutive naturals, for example, 3466 + ... + 49972.

It is an arithmetic number, because the mean of its divisors is an integer number (97108704).

Almost surely, 2^1242620533 is an apocalyptic number.

It is an amenable number.

1242620533 is a deficient number, since it is larger than the sum of its proper divisors (311118731).

1242620533 is a wasteful number, since it uses less digits than its factorization.

1242620533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46872.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 1242620533 is about 35250.8231535095. The cubic root of 1242620533 is about 1075.0933491679.

Adding to 1242620533 its reverse (3350262421), we get a palindrome (4592882954).

The spelling of 1242620533 in words is "one billion, two hundred forty-two million, six hundred twenty thousand, five hundred thirty-three".