642458242434 has 16 divisors (see below), whose sum is σ = 1319643957888. Its totient is φ = 208364835312.

The previous prime is 642458242399. The next prime is 642458242441. The reversal of 642458242434 is 434242854246.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1446977802 + ... + 1446978245.

It is an arithmetic number, because the mean of its divisors is an integer number (82477747368).

Almost surely, 2^642458242434 is an apocalyptic number.

642458242434 is an abundant number, since it is smaller than the sum of its proper divisors (677185715454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642458242434 is a wasteful number, since it uses less digits than its factorization.

642458242434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893956089.

The product of its digits is 5898240, while the sum is 48.

The spelling of 642458242434 in words is "six hundred forty-two billion, four hundred fifty-eight million, two hundred forty-two thousand, four hundred thirty-four".