420521525031143 has 4 divisors (see below), whose sum is σ = 420531623810208. Its totient is φ = 420511426252080.

The previous prime is 420521525031107. The next prime is 420521525031149. The reversal of 420521525031143 is 341130525125024.

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

It is a cyclic number.

It is not a de Polignac number, because 420521525031143 - 2¹² = 420521525027047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420521525031097 and 420521525031106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420521525031149) 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, 5049327071 + ... + 5049410352.

It is an arithmetic number, because the mean of its divisors is an integer number (105132905952552).

Almost surely, 2^{420521525031143} is an apocalyptic number.

420521525031143 is a deficient number, since it is larger than the sum of its proper divisors (10098779065).

420521525031143 is a wasteful number, since it uses less digits than its factorization.

420521525031143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10098779064.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 420521525031143 in words is "four hundred twenty trillion, five hundred twenty-one billion, five hundred twenty-five million, thirty-one thousand, one hundred forty-three".