420057192097 has 4 divisors (see below), whose sum is σ = 426943375636. Its totient is φ = 413171008560.

The previous prime is 420057192019. The next prime is 420057192109. The reversal of 420057192097 is 790291750024.

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 162309071376 + 257748120721 = 402876^2 + 507689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420057192097 is a prime.

It is a super-3 number, since 3×420057192097³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420057192007) 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, 3443091678 + ... + 3443091799.

It is an arithmetic number, because the mean of its divisors is an integer number (106735843909).

Almost surely, 2^420057192097 is an apocalyptic number.

It is an amenable number.

420057192097 is a deficient number, since it is larger than the sum of its proper divisors (6886183539).

420057192097 is an equidigital number, since it uses as much as digits as its factorization.

420057192097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6886183538.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 420057192097 in words is "four hundred twenty billion, fifty-seven million, one hundred ninety-two thousand, ninety-seven".