100442039 has 2 divisors, whose sum is σ = 100442040. Its totient is φ = 100442038.

The previous prime is 100442021. The next prime is 100442053. The reversal of 100442039 is 930244001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100442039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100442059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50221019 + 50221020.

It is an arithmetic number, because the mean of its divisors is an integer number (50221020).

Almost surely, 2^100442039 is an apocalyptic number.

100442039 is a deficient number, since it is larger than the sum of its proper divisors (1).

100442039 is an equidigital number, since it uses as much as digits as its factorization.

100442039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 100442039 is about 10022.0775790252. The cubic root of 100442039 is about 464.8417991916.

The spelling of 100442039 in words is "one hundred million, four hundred forty-two thousand, thirty-nine".