420011407 has 2 divisors, whose sum is σ = 420011408. Its totient is φ = 420011406.

The previous prime is 420011399. The next prime is 420011447. The reversal of 420011407 is 704110024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420011407 - 2³ = 420011399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420011447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210005703 + 210005704.

It is an arithmetic number, because the mean of its divisors is an integer number (210005704).

Almost surely, 2^420011407 is an apocalyptic number.

420011407 is a deficient number, since it is larger than the sum of its proper divisors (1).

420011407 is an equidigital number, since it uses as much as digits as its factorization.

420011407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 420011407 is about 20494.1798323329. The cubic root of 420011407 is about 748.8940184674.

The spelling of 420011407 in words is "four hundred twenty million, eleven thousand, four hundred seven".