101402123 has 2 divisors, whose sum is σ = 101402124. Its totient is φ = 101402122.

The previous prime is 101402117. The next prime is 101402153. The reversal of 101402123 is 321204101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101402123 - 2¹² = 101398027 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 101402098 and 101402107.

It is not a weakly prime, because it can be changed into another prime (101402113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50701061 + 50701062.

It is an arithmetic number, because the mean of its divisors is an integer number (50701062).

Almost surely, 2^101402123 is an apocalyptic number.

101402123 is a deficient number, since it is larger than the sum of its proper divisors (1).

101402123 is an equidigital number, since it uses as much as digits as its factorization.

101402123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 101402123 is about 10069.8621142496. The cubic root of 101402123 is about 466.3181820665.

Adding to 101402123 its reverse (321204101), we get a palindrome (422606224).

The spelling of 101402123 in words is "one hundred one million, four hundred two thousand, one hundred twenty-three".