260021423 has 2 divisors, whose sum is σ = 260021424. Its totient is φ = 260021422.

The previous prime is 260021413. The next prime is 260021429. The reversal of 260021423 is 324120062.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260021423 is a prime.

It is a super-2 number, since 2×260021423² = 135222280837889858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 260021395 and 260021404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260021429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130010711 + 130010712.

It is an arithmetic number, because the mean of its divisors is an integer number (130010712).

Almost surely, 2^260021423 is an apocalyptic number.

260021423 is a deficient number, since it is larger than the sum of its proper divisors (1).

260021423 is an equidigital number, since it uses as much as digits as its factorization.

260021423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 260021423 is about 16125.1797819435. The cubic root of 260021423 is about 638.2679591981.

Adding to 260021423 its reverse (324120062), we get a palindrome (584141485).

The spelling of 260021423 in words is "two hundred sixty million, twenty-one thousand, four hundred twenty-three".