860021423 has 2 divisors, whose sum is σ = 860021424. Its totient is φ = 860021422.

The previous prime is 860021411. The next prime is 860021429. The reversal of 860021423 is 324120068.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-860021423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 860021392 and 860021401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (860021429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430010711 + 430010712.

It is an arithmetic number, because the mean of its divisors is an integer number (430010712).

Almost surely, 2^860021423 is an apocalyptic number.

860021423 is a deficient number, since it is larger than the sum of its proper divisors (1).

860021423 is an equidigital number, since it uses as much as digits as its factorization.

860021423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 860021423 is about 29326.1218540741. The cubic root of 860021423 is about 950.9764375965.

The spelling of 860021423 in words is "eight hundred sixty million, twenty-one thousand, four hundred twenty-three".