1012100039 has 2 divisors, whose sum is σ = 1012100040. Its totient is φ = 1012100038.

The previous prime is 1012100009. The next prime is 1012100123. The reversal of 1012100039 is 9300012101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012100039 - 2⁸ = 1012099783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012100009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506050019 + 506050020.

It is an arithmetic number, because the mean of its divisors is an integer number (506050020).

Almost surely, 2^1012100039 is an apocalyptic number.

1012100039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012100039 is an equidigital number, since it uses as much as digits as its factorization.

1012100039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1012100039 is about 31813.5197518288. The cubic root of 1012100039 is about 1004.0171869330.

The spelling of 1012100039 in words is "one billion, twelve million, one hundred thousand, thirty-nine".