642480903 has 10 divisors (see below), whose sum is σ = 959755544. Its totient is φ = 428320548.

The previous prime is 642480901. The next prime is 642480907. The reversal of 642480903 is 309084246.

It is a happy number.

642480903 is a `hidden beast` number, since 642 + 4 + 8 + 0 + 9 + 0 + 3 = 666.

It is not a de Polignac number, because 642480903 - 2¹ = 642480901 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 (642480901) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3965851 + ... + 3966012.

Almost surely, 2^642480903 is an apocalyptic number.

642480903 is a deficient number, since it is larger than the sum of its proper divisors (317274641).

642480903 is an equidigital number, since it uses as much as digits as its factorization.

642480903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7931875 (or 7931866 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 642480903 is about 25347.2070059011. The cubic root of 642480903 is about 862.8859701631.

The spelling of 642480903 in words is "six hundred forty-two million, four hundred eighty thousand, nine hundred three".