1242486553 has 16 divisors (see below), whose sum is σ = 1549845504. Its totient is φ = 967689360.

The previous prime is 1242486523. The next prime is 1242486559. The reversal of 1242486553 is 3556842421.

It is not a de Polignac number, because 1242486553 - 2⁹ = 1242486041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242486559) 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, 306526 + ... + 310552.

It is an arithmetic number, because the mean of its divisors is an integer number (96865344).

Almost surely, 2^1242486553 is an apocalyptic number.

It is an amenable number.

1242486553 is a deficient number, since it is larger than the sum of its proper divisors (307358951).

1242486553 is a wasteful number, since it uses less digits than its factorization.

1242486553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052.

The product of its digits is 230400, while the sum is 40.

The square root of 1242486553 is about 35248.9227211272. The cubic root of 1242486553 is about 1075.0547087355.

The spelling of 1242486553 in words is "one billion, two hundred forty-two million, four hundred eighty-six thousand, five hundred fifty-three".