420279057 has 16 divisors (see below), whose sum is σ = 679239360. Its totient is φ = 254714400.

The previous prime is 420279053. The next prime is 420279061. The reversal of 420279057 is 750972024.

It is an interprime number because it is at equal distance from previous prime (420279053) and next prime (420279061).

It is not a de Polignac number, because 420279057 - 2² = 420279053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420279053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707244 + ... + 707837.

It is an arithmetic number, because the mean of its divisors is an integer number (42452460).

Almost surely, 2^420279057 is an apocalyptic number.

It is an amenable number.

420279057 is a deficient number, since it is larger than the sum of its proper divisors (258960303).

420279057 is a wasteful number, since it uses less digits than its factorization.

420279057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415101 (or 1415095 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 420279057 is about 20500.7086950671. The cubic root of 420279057 is about 749.0530609117.

The spelling of 420279057 in words is "four hundred twenty million, two hundred seventy-nine thousand, fifty-seven".