420733755 has 24 divisors (see below), whose sum is σ = 785370768. Its totient is φ = 207130176.

The previous prime is 420733741. The next prime is 420733757. The reversal of 420733755 is 557337024.

It is not a de Polignac number, because 420733755 - 2⁷ = 420733627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420733757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359017 + ... + 360186.

It is an arithmetic number, because the mean of its divisors is an integer number (32723782).

Almost surely, 2^420733755 is an apocalyptic number.

420733755 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

420733755 is a deficient number, since it is larger than the sum of its proper divisors (364637013).

420733755 is a wasteful number, since it uses less digits than its factorization.

420733755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719227 (or 719224 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 36.

The square root of 420733755 is about 20511.7955089261. The cubic root of 420733755 is about 749.3230959183.

The spelling of 420733755 in words is "four hundred twenty million, seven hundred thirty-three thousand, seven hundred fifty-five".