642000248 has 16 divisors (see below), whose sum is σ = 1204471080. Its totient is φ = 320807968.

The previous prime is 642000239. The next prime is 642000251. The reversal of 642000248 is 842000246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9290 + ... + 37017.

Almost surely, 2^642000248 is an apocalyptic number.

It is an amenable number.

642000248 is a deficient number, since it is larger than the sum of its proper divisors (562470832).

642000248 is a wasteful number, since it uses less digits than its factorization.

642000248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48046 (or 48042 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 642000248 is about 25337.7238125290. The cubic root of 642000248 is about 862.6707347503.

The spelling of 642000248 in words is "six hundred forty-two million, two hundred forty-eight", and thus it is an aban number.