420140259 has 72 divisors (see below), whose sum is σ = 775417968. Its totient is φ = 216760320.

The previous prime is 420140219. The next prime is 420140297. The reversal of 420140259 is 952041024.

420140259 is a `hidden beast` number, since 4 + 201 + 402 + 59 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-420140259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420140209) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1246539 + ... + 1246875.

It is an arithmetic number, because the mean of its divisors is an integer number (10769694).

Almost surely, 2^420140259 is an apocalyptic number.

420140259 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

420140259 is a deficient number, since it is larger than the sum of its proper divisors (355277709).

420140259 is a wasteful number, since it uses less digits than its factorization.

420140259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 420140259 is about 20497.3232154835. The cubic root of 420140259 is about 748.9705930749.

The spelling of 420140259 in words is "four hundred twenty million, one hundred forty thousand, two hundred fifty-nine".