420908755 has 8 divisors (see below), whose sum is σ = 522507600. Its totient is φ = 325115616.

The previous prime is 420908753. The next prime is 420908777. The reversal of 420908755 is 557809024.

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 420908755 - 2¹ = 420908753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420908753) 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, 1451265 + ... + 1451554.

It is an arithmetic number, because the mean of its divisors is an integer number (65313450).

Almost surely, 2^420908755 is an apocalyptic number.

420908755 is a deficient number, since it is larger than the sum of its proper divisors (101598845).

420908755 is a wasteful number, since it uses less digits than its factorization.

420908755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902853.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 420908755 is about 20516.0609035945. The cubic root of 420908755 is about 749.4269726681.

The spelling of 420908755 in words is "four hundred twenty million, nine hundred eight thousand, seven hundred fifty-five".