420140515255 has 8 divisors (see below), whose sum is σ = 506429465472. Its totient is φ = 334605180768.

The previous prime is 420140515247. The next prime is 420140515259. The reversal of 420140515255 is 552515041024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420140515255 - 2³ = 420140515247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420140515255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420140515259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188402704 + ... + 188404933.

It is an arithmetic number, because the mean of its divisors is an integer number (63303683184).

Almost surely, 2^420140515255 is an apocalyptic number.

420140515255 is a deficient number, since it is larger than the sum of its proper divisors (86288950217).

420140515255 is a wasteful number, since it uses less digits than its factorization.

420140515255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376807865.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 420140515255 its reverse (552515041024), we get a palindrome (972655556279).

The spelling of 420140515255 in words is "four hundred twenty billion, one hundred forty million, five hundred fifteen thousand, two hundred fifty-five".