420507423 has 16 divisors (see below), whose sum is σ = 711970560. Its totient is φ = 240289848.

The previous prime is 420507421. The next prime is 420507431. The reversal of 420507423 is 324705024.

It is not a de Polignac number, because 420507423 - 2¹ = 420507421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420507421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1112265 + ... + 1112642.

It is an arithmetic number, because the mean of its divisors is an integer number (44498160).

Almost surely, 2^420507423 is an apocalyptic number.

420507423 is a deficient number, since it is larger than the sum of its proper divisors (291463137).

420507423 is a wasteful number, since it uses less digits than its factorization.

420507423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224923 (or 2224917 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 420507423 is about 20506.2776485641. The cubic root of 420507423 is about 749.1887067207.

The spelling of 420507423 in words is "four hundred twenty million, five hundred seven thousand, four hundred twenty-three".