42003123451 has 2 divisors, whose sum is σ = 42003123452. Its totient is φ = 42003123450.

The previous prime is 42003123367. The next prime is 42003123467. The reversal of 42003123451 is 15432130024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42003123451 - 2¹⁵ = 42003090683 is a prime.

It is a super-2 number, since 2×42003123451² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42003123751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001561725 + 21001561726.

It is an arithmetic number, because the mean of its divisors is an integer number (21001561726).

Almost surely, 2^42003123451 is an apocalyptic number.

42003123451 is a deficient number, since it is larger than the sum of its proper divisors (1).

42003123451 is an equidigital number, since it uses as much as digits as its factorization.

42003123451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 42003123451 its reverse (15432130024), we get a palindrome (57435253475).

The spelling of 42003123451 in words is "forty-two billion, three million, one hundred twenty-three thousand, four hundred fifty-one".