642386199 has 16 divisors (see below), whose sum is σ = 1054172672. Its totient is φ = 338840928.

The previous prime is 642386197. The next prime is 642386207. The reversal of 642386199 is 991683246.

It is not a de Polignac number, because 642386199 - 2¹ = 642386197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642386197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1176259 + ... + 1176804.

It is an arithmetic number, because the mean of its divisors is an integer number (65885792).

Almost surely, 2^642386199 is an apocalyptic number.

642386199 is a deficient number, since it is larger than the sum of its proper divisors (411786473).

642386199 is a wasteful number, since it uses less digits than its factorization.

642386199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353086.

The product of its digits is 559872, while the sum is 48.

The square root of 642386199 is about 25345.3388022334. The cubic root of 642386199 is about 862.8435705794.

The spelling of 642386199 in words is "six hundred forty-two million, three hundred eighty-six thousand, one hundred ninety-nine".