1786420242 has 72 divisors (see below), whose sum is σ = 4220308560. Its totient is φ = 544592160.

The previous prime is 1786420211. The next prime is 1786420253. The reversal of 1786420242 is 2420246871.

1786420242 is a `hidden beast` number, since 1 + 7 + 8 + 642 + 0 + 2 + 4 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1786420197 and 1786420206.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 284517 + ... + 290727.

Almost surely, 2^1786420242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1786420242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2110154280).

1786420242 is an abundant number, since it is smaller than the sum of its proper divisors (2433888318).

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

1786420242 is a wasteful number, since it uses less digits than its factorization.

1786420242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296 (or 6264 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 1786420242 is about 42266.0648984502. The cubic root of 1786420242 is about 1213.3736060342.

The spelling of 1786420242 in words is "one billion, seven hundred eighty-six million, four hundred twenty thousand, two hundred forty-two".