420657043503 has 8 divisors (see below), whose sum is σ = 561748340608. Its totient is φ = 280001887704.

The previous prime is 420657043493. The next prime is 420657043511. The reversal of 420657043503 is 305340756024.

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

It is not a de Polignac number, because 420657043503 - 2²⁵ = 420623489071 is a prime.

It is a super-2 number, since 2×420657043503² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420657023503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109033075 + ... + 109036932.

It is an arithmetic number, because the mean of its divisors is an integer number (70218542576).

Almost surely, 2^420657043503 is an apocalyptic number.

420657043503 is a deficient number, since it is larger than the sum of its proper divisors (141091297105).

420657043503 is a wasteful number, since it uses less digits than its factorization.

420657043503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218070653.

The product of its (nonzero) digits is 302400, while the sum is 39.

Adding to 420657043503 its reverse (305340756024), we get a palindrome (725997799527).

The spelling of 420657043503 in words is "four hundred twenty billion, six hundred fifty-seven million, forty-three thousand, five hundred three".