420312755 has 8 divisors (see below), whose sum is σ = 512924400. Its totient is φ = 330550816.

The previous prime is 420312749. The next prime is 420312773. The reversal of 420312755 is 557213024.

It is a happy number.

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 420312755 - 2¹⁸ = 420050611 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712100 + ... + 712689.

It is an arithmetic number, because the mean of its divisors is an integer number (64115550).

Almost surely, 2^420312755 is an apocalyptic number.

420312755 is a deficient number, since it is larger than the sum of its proper divisors (92611645).

420312755 is a wasteful number, since it uses less digits than its factorization.

420312755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424853.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 420312755 is about 20501.5305526197. The cubic root of 420312755 is about 749.0730800831.

Adding to 420312755 its reverse (557213024), we get a palindrome (977525779).

The spelling of 420312755 in words is "four hundred twenty million, three hundred twelve thousand, seven hundred fifty-five".