420631811029 has 4 divisors (see below), whose sum is σ = 420633249376. Its totient is φ = 420630372684.

The previous prime is 420631811021. The next prime is 420631811101. The reversal of 420631811029 is 920118136024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420631811029 - 2³ = 420631811021 is a prime.

It is a super-2 number, since 2×420631811029² (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 (420631811021) 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, 106569 + ... + 923374.

It is an arithmetic number, because the mean of its divisors is an integer number (105158312344).

Almost surely, 2^420631811029 is an apocalyptic number.

It is an amenable number.

420631811029 is a deficient number, since it is larger than the sum of its proper divisors (1438347).

420631811029 is a wasteful number, since it uses less digits than its factorization.

420631811029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438346.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 420631811029 in words is "four hundred twenty billion, six hundred thirty-one million, eight hundred eleven thousand, twenty-nine".