420242667 has 12 divisors (see below), whose sum is σ = 606741624. Its totient is φ = 258610560.

The previous prime is 420242657. The next prime is 420242687. The reversal of 420242667 is 766242024.

It is not a de Polignac number, because 420242667 - 2¹⁵ = 420209899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420242657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 413934 + ... + 414947.

It is an arithmetic number, because the mean of its divisors is an integer number (50561802).

Almost surely, 2^420242667 is an apocalyptic number.

420242667 is a deficient number, since it is larger than the sum of its proper divisors (186498957).

420242667 is a wasteful number, since it uses less digits than its factorization.

420242667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828910 (or 828897 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 420242667 is about 20499.8211455612. The cubic root of 420242667 is about 749.0314412860.

The spelling of 420242667 in words is "four hundred twenty million, two hundred forty-two thousand, six hundred sixty-seven".