1242448973 has 4 divisors (see below), whose sum is σ = 1242756768. Its totient is φ = 1242141180.

The previous prime is 1242448939. The next prime is 1242448993. The reversal of 1242448973 is 3798442421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1242448973 - 2¹⁶ = 1242383437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242448903) 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, 147761 + ... + 155942.

It is an arithmetic number, because the mean of its divisors is an integer number (310689192).

Almost surely, 2^1242448973 is an apocalyptic number.

It is an amenable number.

1242448973 is a deficient number, since it is larger than the sum of its proper divisors (307795).

1242448973 is an equidigital number, since it uses as much as digits as its factorization.

1242448973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307794.

The product of its digits is 387072, while the sum is 44.

The square root of 1242448973 is about 35248.3896511600. The cubic root of 1242448973 is about 1075.0438699962.

It can be divided in two parts, 1242448 and 973, that added together give a palindrome (1243421).

The spelling of 1242448973 in words is "one billion, two hundred forty-two million, four hundred forty-eight thousand, nine hundred seventy-three".