420517743 has 8 divisors (see below), whose sum is σ = 561678000. Its totient is φ = 279851328.

The previous prime is 420517693. The next prime is 420517751. The reversal of 420517743 is 347715024.

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

It is not a de Polignac number, because 420517743 - 2⁶ = 420517679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420517753) 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, 121468 + ... + 124881.

It is an arithmetic number, because the mean of its divisors is an integer number (70209750).

Almost surely, 2^420517743 is an apocalyptic number.

420517743 is a deficient number, since it is larger than the sum of its proper divisors (141160257).

420517743 is a wasteful number, since it uses less digits than its factorization.

420517743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246921.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 420517743 is about 20506.5292772814. The cubic root of 420517743 is about 749.1948354783.

It can be divided in two parts, 42051 and 7743, that added together give a palindrome (49794).

The spelling of 420517743 in words is "four hundred twenty million, five hundred seventeen thousand, seven hundred forty-three".