642260419 has 8 divisors (see below), whose sum is σ = 665082720. Its totient is φ = 619483200.

The previous prime is 642260389. The next prime is 642260429. The reversal of 642260419 is 914062246.

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 642260419 - 2⁷ = 642260291 is a prime.

It is a super-2 number, since 2×642260419² = 824996891628111122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642260429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19159 + ... + 40639.

It is an arithmetic number, because the mean of its divisors is an integer number (83135340).

Almost surely, 2^642260419 is an apocalyptic number.

642260419 is a deficient number, since it is larger than the sum of its proper divisors (22822301).

642260419 is a wasteful number, since it uses less digits than its factorization.

642260419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22541.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 642260419 is about 25342.8573566597. The cubic root of 642260419 is about 862.7872516295.

The spelling of 642260419 in words is "six hundred forty-two million, two hundred sixty thousand, four hundred nineteen".