100442619 has 16 divisors (see below), whose sum is σ = 151971840. Its totient is φ = 65536200.

The previous prime is 100442611. The next prime is 100442653. The reversal of 100442619 is 916244001.

100442619 is a `hidden beast` number, since 1 + 0 + 0 + 4 + 42 + 619 = 666.

It is not a de Polignac number, because 100442619 - 2³ = 100442611 is a prime.

It is a super-2 number, since 2×100442619² = 20177439423158322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 100442592 and 100442601.

It is not an unprimeable number, because it can be changed into a prime (100442611) 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, 38307 + ... + 40844.

It is an arithmetic number, because the mean of its divisors is an integer number (9498240).

Almost surely, 2^100442619 is an apocalyptic number.

100442619 is a deficient number, since it is larger than the sum of its proper divisors (51529221).

100442619 is an equidigital number, since it uses as much as digits as its factorization.

100442619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79207 (or 79201 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 100442619 is about 10022.1065150995. The cubic root of 100442619 is about 464.8426939289.

The spelling of 100442619 in words is "one hundred million, four hundred forty-two thousand, six hundred nineteen".