420361252637 has 4 divisors (see below), whose sum is σ = 421100025180. Its totient is φ = 419622480096.

The previous prime is 420361252573. The next prime is 420361252651. The reversal of 420361252637 is 736252163024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77473712281 + 342887540356 = 278341^2 + 585566^2 .

It is a cyclic number.

It is not a de Polignac number, because 420361252637 - 2⁶ = 420361252573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420361252594 and 420361252603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420361252937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369385418 + ... + 369386555.

It is an arithmetic number, because the mean of its divisors is an integer number (105275006295).

Almost surely, 2^420361252637 is an apocalyptic number.

It is an amenable number.

420361252637 is a deficient number, since it is larger than the sum of its proper divisors (738772543).

420361252637 is an equidigital number, since it uses as much as digits as its factorization.

420361252637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738772542.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 420361252637 in words is "four hundred twenty billion, three hundred sixty-one million, two hundred fifty-two thousand, six hundred thirty-seven".