1242489536 has 28 divisors (see below), whose sum is σ = 2477277240. Its totient is φ = 618293760.

The previous prime is 1242489533. The next prime is 1242489559. The reversal of 1242489536 is 6359842421.

It is not an unprimeable number, because it can be changed into a prime (1242489533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32501 + ... + 59508.

Almost surely, 2^1242489536 is an apocalyptic number.

1242489536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1242489536 is a deficient number, since it is larger than the sum of its proper divisors (1234787704).

1242489536 is an equidigital number, since it uses as much as digits as its factorization.

1242489536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92232 (or 92222 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 1242489536 is about 35248.9650344517. The cubic root of 1242489536 is about 1075.0555690763.

The spelling of 1242489536 in words is "one billion, two hundred forty-two million, four hundred eighty-nine thousand, five hundred thirty-six".