420618704381 has 4 divisors (see below), whose sum is σ = 420624130812. Its totient is φ = 420613277952.

The previous prime is 420618704371. The next prime is 420618704399. The reversal of 420618704381 is 183407816024.

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 408768422500 + 11850281881 = 639350^2 + 108859^2 .

It is a cyclic number.

It is not a de Polignac number, because 420618704381 - 2²² = 420614510077 is a prime.

It is a super-2 number, since 2×420618704381² (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 (420618704321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2595236 + ... + 2752541.

It is an arithmetic number, because the mean of its divisors is an integer number (105156032703).

Almost surely, 2^420618704381 is an apocalyptic number.

It is an amenable number.

420618704381 is a deficient number, since it is larger than the sum of its proper divisors (5426431).

420618704381 is an equidigital number, since it uses as much as digits as its factorization.

420618704381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5426430.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 420618704381 in words is "four hundred twenty billion, six hundred eighteen million, seven hundred four thousand, three hundred eighty-one".