254022421 has 2 divisors, whose sum is σ = 254022422. Its totient is φ = 254022420.

The previous prime is 254022403. The next prime is 254022469. The reversal of 254022421 is 124220452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231800625 + 22221796 = 15225^2 + 4714^2 .

It is a cyclic number.

It is not a de Polignac number, because 254022421 - 2¹⁵ = 253989653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 254022392 and 254022401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254022491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127011210 + 127011211.

It is an arithmetic number, because the mean of its divisors is an integer number (127011211).

Almost surely, 2^254022421 is an apocalyptic number.

It is an amenable number.

254022421 is a deficient number, since it is larger than the sum of its proper divisors (1).

254022421 is an equidigital number, since it uses as much as digits as its factorization.

254022421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 254022421 is about 15938.0808443175. The cubic root of 254022421 is about 633.3211868092.

Adding to 254022421 its reverse (124220452), we get a palindrome (378242873).

The spelling of 254022421 in words is "two hundred fifty-four million, twenty-two thousand, four hundred twenty-one".