101428039 has 2 divisors, whose sum is σ = 101428040. Its totient is φ = 101428038.

The previous prime is 101428003. The next prime is 101428043. The reversal of 101428039 is 930824101.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (930824101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101428039 - 2¹⁵ = 101395271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101427998 and 101428016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101498039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50714019 + 50714020.

It is an arithmetic number, because the mean of its divisors is an integer number (50714020).

Almost surely, 2^101428039 is an apocalyptic number.

101428039 is a deficient number, since it is larger than the sum of its proper divisors (1).

101428039 is an equidigital number, since it uses as much as digits as its factorization.

101428039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 101428039 is about 10071.1488421133. The cubic root of 101428039 is about 466.3579053394.

It can be divided in two parts, 10142 and 8039, that added together give a palindrome (18181).

The spelling of 101428039 in words is "one hundred one million, four hundred twenty-eight thousand, thirty-nine".