42003325251 has 20 divisors (see below), whose sum is σ = 66048116200. Its totient is φ = 26528414976.

The previous prime is 42003325211. The next prime is 42003325261. The reversal of 42003325251 is 15252330024.

It is a happy number.

It is not a de Polignac number, because 42003325251 - 2⁷ = 42003325123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42003325211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13644766 + ... + 13647843.

It is an arithmetic number, because the mean of its divisors is an integer number (3302405810).

Almost surely, 2^42003325251 is an apocalyptic number.

42003325251 is a deficient number, since it is larger than the sum of its proper divisors (24044790949).

42003325251 is a wasteful number, since it uses less digits than its factorization.

42003325251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27292640 (or 27292631 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 42003325251 its reverse (15252330024), we get a palindrome (57255655275).

The spelling of 42003325251 in words is "forty-two billion, three million, three hundred twenty-five thousand, two hundred fifty-one".