642201264919 has 8 divisors (see below), whose sum is σ = 643042709792. Its totient is φ = 641360332800.

The previous prime is 642201264917. The next prime is 642201264931. The reversal of 642201264919 is 919462102246.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642201264919 - 2¹ = 642201264917 is a prime.

It is a super-2 number, since 2×642201264919² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642201264917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2411182 + ... + 2664244.

It is an arithmetic number, because the mean of its divisors is an integer number (80380338724).

Almost surely, 2^642201264919 is an apocalyptic number.

642201264919 is a deficient number, since it is larger than the sum of its proper divisors (841444873).

642201264919 is a wasteful number, since it uses less digits than its factorization.

642201264919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256377.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 642201264919 in words is "six hundred forty-two billion, two hundred one million, two hundred sixty-four thousand, nine hundred nineteen".