1451420209 has 2 divisors, whose sum is σ = 1451420210. Its totient is φ = 1451420208.

The previous prime is 1451420183. The next prime is 1451420219. The reversal of 1451420209 is 9020241541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1412632225 + 38787984 = 37585^2 + 6228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451420209 - 2⁵ = 1451420177 is a prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (1451420219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725710104 + 725710105.

It is an arithmetic number, because the mean of its divisors is an integer number (725710105).

Almost surely, 2^1451420209 is an apocalyptic number.

It is an amenable number.

1451420209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451420209 is an equidigital number, since it uses as much as digits as its factorization.

1451420209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1451420209 is about 38097.5092230450. The cubic root of 1451420209 is about 1132.2206076245.

The spelling of 1451420209 in words is "one billion, four hundred fifty-one million, four hundred twenty thousand, two hundred nine".