642477003 has 32 divisors (see below), whose sum is σ = 999567360. Its totient is φ = 359488800.

The previous prime is 642476999. The next prime is 642477007. The reversal of 642477003 is 300774246.

It is an interprime number because it is at equal distance from previous prime (642476999) and next prime (642477007).

It is not a de Polignac number, because 642477003 - 2² = 642476999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642477007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250578 + ... + 253128.

It is an arithmetic number, because the mean of its divisors is an integer number (31236480).

Almost surely, 2^642477003 is an apocalyptic number.

642477003 is a deficient number, since it is larger than the sum of its proper divisors (357090357).

642477003 is a wasteful number, since it uses less digits than its factorization.

642477003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 642477003 is about 25347.1300742313. The cubic root of 642477003 is about 862.8842241905.

The spelling of 642477003 in words is "six hundred forty-two million, four hundred seventy-seven thousand, three".