42097851 has 12 divisors (see below), whose sum is σ = 61399728. Its totient is φ = 27792144.

The previous prime is 42097841. The next prime is 42097877. The reversal of 42097851 is 15879024.

42097851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42097851 - 2⁵ = 42097819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42097841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21780 + ... + 23633.

It is an arithmetic number, because the mean of its divisors is an integer number (5116644).

Almost surely, 2^42097851 is an apocalyptic number.

42097851 is a deficient number, since it is larger than the sum of its proper divisors (19301877).

42097851 is a wasteful number, since it uses less digits than its factorization.

42097851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45522 (or 45519 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 42097851 is about 6488.2856749684. The cubic root of 42097851 is about 347.8724016943.

The spelling of 42097851 in words is "forty-two million, ninety-seven thousand, eight hundred fifty-one".