1206141421 has 2 divisors, whose sum is σ = 1206141422. Its totient is φ = 1206141420.

The previous prime is 1206141323. The next prime is 1206141457. The reversal of 1206141421 is 1241416021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 912704521 + 293436900 = 30211^2 + 17130^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206141421 - 2⁹ = 1206140909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1206141392 and 1206141401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1206141221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603070710 + 603070711.

It is an arithmetic number, because the mean of its divisors is an integer number (603070711).

Almost surely, 2^1206141421 is an apocalyptic number.

It is an amenable number.

1206141421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206141421 is an equidigital number, since it uses as much as digits as its factorization.

1206141421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1206141421 is about 34729.5468009590. The cubic root of 1206141421 is about 1064.4683280076.

Adding to 1206141421 its reverse (1241416021), we get a palindrome (2447557442).

The spelling of 1206141421 in words is "one billion, two hundred six million, one hundred forty-one thousand, four hundred twenty-one".