642341276 has 6 divisors (see below), whose sum is σ = 1124097240. Its totient is φ = 321170636.

The previous prime is 642341239. The next prime is 642341279. The reversal of 642341276 is 672143246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642341279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80292656 + ... + 80292663.

It is an arithmetic number, because the mean of its divisors is an integer number (187349540).

Almost surely, 2^642341276 is an apocalyptic number.

It is an amenable number.

642341276 is a deficient number, since it is larger than the sum of its proper divisors (481755964).

642341276 is a wasteful number, since it uses less digits than its factorization.

642341276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160585323 (or 160585321 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 642341276 is about 25344.4525685602. The cubic root of 642341276 is about 862.8234568091.

The spelling of 642341276 in words is "six hundred forty-two million, three hundred forty-one thousand, two hundred seventy-six".