1200420407 has 2 divisors, whose sum is σ = 1200420408. Its totient is φ = 1200420406.

The previous prime is 1200420391. The next prime is 1200420433. The reversal of 1200420407 is 7040240021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200420407 - 2⁴ = 1200420391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200426407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600210203 + 600210204.

It is an arithmetic number, because the mean of its divisors is an integer number (600210204).

Almost surely, 2^1200420407 is an apocalyptic number.

1200420407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200420407 is an equidigital number, since it uses as much as digits as its factorization.

1200420407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 1200420407 is about 34647.0836723670. The cubic root of 1200420407 is about 1062.7826516659.

Adding to 1200420407 its reverse (7040240021), we get a palindrome (8240660428).

The spelling of 1200420407 in words is "one billion, two hundred million, four hundred twenty thousand, four hundred seven".