42203343451 has 2 divisors, whose sum is σ = 42203343452. Its totient is φ = 42203343450.

The previous prime is 42203343449. The next prime is 42203343461. The reversal of 42203343451 is 15434330224.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42203343451 - 2¹ = 42203343449 is a prime.

It is a super-2 number, since 2×42203343451² (a number of 22 digits) contains 22 as substring.

Together with 42203343449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42203343461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21101671725 + 21101671726.

It is an arithmetic number, because the mean of its divisors is an integer number (21101671726).

Almost surely, 2^42203343451 is an apocalyptic number.

42203343451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42203343451 is an equidigital number, since it uses as much as digits as its factorization.

42203343451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 42203343451 its reverse (15434330224), we get a palindrome (57637673675).

The spelling of 42203343451 in words is "forty-two billion, two hundred three million, three hundred forty-three thousand, four hundred fifty-one".