1858420566042 has 32 divisors (see below), whose sum is σ = 4041843147072. Its totient is φ = 567276228864.

The previous prime is 1858420566031. The next prime is 1858420566043. The reversal of 1858420566042 is 2406650248581.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1858420566043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246209868 + ... + 246217415.

It is an arithmetic number, because the mean of its divisors is an integer number (126307598346).

Almost surely, 2^{1858420566042} is an apocalyptic number.

1858420566042 is an abundant number, since it is smaller than the sum of its proper divisors (2183422581030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1858420566042 is a wasteful number, since it uses less digits than its factorization.

1858420566042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492427342.

The product of its (nonzero) digits is 3686400, while the sum is 51.

The spelling of 1858420566042 in words is "one trillion, eight hundred fifty-eight billion, four hundred twenty million, five hundred sixty-six thousand, forty-two".