420137259 has 4 divisors (see below), whose sum is σ = 560183016. Its totient is φ = 280091504.

The previous prime is 420137233. The next prime is 420137279. The reversal of 420137259 is 952731024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420137259 - 2¹³ = 420129067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420137279) 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 3 ways as a sum of consecutive naturals, for example, 70022874 + ... + 70022879.

It is an arithmetic number, because the mean of its divisors is an integer number (140045754).

Almost surely, 2^420137259 is an apocalyptic number.

420137259 is a deficient number, since it is larger than the sum of its proper divisors (140045757).

420137259 is a wasteful number, since it uses less digits than its factorization.

420137259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140045756.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 420137259 is about 20497.2500350657. The cubic root of 420137259 is about 748.9688104027.

The spelling of 420137259 in words is "four hundred twenty million, one hundred thirty-seven thousand, two hundred fifty-nine".